{tocify} $title={Table of Contents}
01 – Wiring components, tools & safety devices
1. ELCB gives protection against
(A) Shock
(B)
Overload
(C) Short Circuits
(D) All of the above
Answer: - Option
A
2. Safety tool used to connect the lugs for wires and cables is
(A)
Hammer
(B) Crimping tool
(C) Plier
(D) Line Tester
Answer: - Option B
3. MCB Stands for
(A) Moulded case breaker
(B)
Miniature circuit breaker
(C) Miniature case breaker
(D) Moulded circuit breaker
Answer: - Option
B
4. Safety tool is used for measurement of wire diameter
is
(A) Wire Gauge
(B) Line Tester
(C) Crimping tool
(D) Wire Striper
Answer: - Option
A
5. The safety
tool used to tight or loose screw
or nuts in narrow locations
is
(A)
Hammer
(B)
Crimping tool
(C) Combination Plier
(D) Nose Plier
Answer: - Option
D
6. Statement of IE
Rule Number 42 is
(A) Danger Notices
(B)
Street Boxes
(C) Accidental Charge
(D) None of the above
Answer: - Option
C
7. MCB gives protection against
(A) Shock
(B) Overload
(C) Short Circuits
(D) Overload and Short Circuits
Answer: - Option
D
8. The Switch
with one input terminal and two output terminals is called
(A) SPST
(B) DPST
(C) SPDT
(D) DPDT
Answer: -
Option C
9. Provisions applicable to protective equipment is IE Rule Number
(A)
29
(B)
43
(C) 34
(D) 44
Answer: Option B
10. ICTP Stands for
(A)
Iron clad triple pole
(B) Iron clad two pole
(C) Iron clad twenty pole
(D) Iron clad ten pole
Answer: - Option
A
11. Safety rubber mats
are used to
(A)
Avoid Shocks
(B)
Crimp lugs
(C) Test continuity
(D) Check supply voltage
Answer: - Option
A
12. Statement of IE
Rule Number 35 is
(A) Danger Notices
(B) Street Boxes
(C) Accidental Charge
(D) None of the above
Answer: - Option
A
13. Safety gloves used for electrical protection must be electrically tested every
(A) One Month
(B) Three Month
(C) Six Month
(D) Twelve Month
Answer: - Option
C
14. Earth wire or ground
wire is made of
(A)
Copper
(B)
Aluminium
(C) Galvanised Steel
(D) Iron
Answer: - Option C
15. The supply
voltage available at wall socket
in our homes is
(A) 230 Volts A.C
(B)
230 Volts
D.C
(C) 440 Volts A.C
(D)
440
Volts A.C Answer: - Option A
16. The Switch
with two input terminals and one output
terminals is called
(A) SPST
(B)
DPST
(C) SPDT
(D) DPDT
Answer: -
Option B
17. Cut out on consumer
premises is IE Rule Number
(A) 29
(B)
31
(C) 34
(D) 44
Answer: Option B
18. Instructions for restoration of persons suffering
from shock is IE Rule Number
(A) 32
(B) 40
(C) 42
(D) 44
Answer: Option D
19. Holder is used to
hold
(A)
Lamp & Fuses
(B) Switches
(C) Tube-light
(D) All of the above
Answer: Option A
20. Philips is a type of
(A) Hammer
(B)
Crimping tool
(C) Plier
(D) Screw Driver
Answer: - Option
D
21. Knife is made up of
(A) Copper
(B)
Silver
(C) Tungsten
(D) Steel
Answer: - Option
D
22. Safety Gloves of class & color
00 Beige has maximum use A.C/ D.C Voltage of
(A) 500/750 V (B) 5000/7500 V (C) 1000/1500 V
(D) 7500/11250 V
Answer: Option
A
23. Which Plug does not
require ground connection?
(A) Type A
(B) Type B
(C) Type C
(D) Type D
Answer: - Option
A
24. Allen is a type of
(A) Hammer
(B)
Crimping tool
(C) Plier
(D) Screw Driver
Answer: - Option
D
25. The Switch
with two input
terminals and two output terminals
is called
(A) SPST
(B) DPST
(C) SPDT
(D) DPDT
Answer: -
Option D
26. The Base and Cover
of Socket are made up of
(A)
Rubber
(B) Bakelite
(C) Tungsten
(D) Iron
Answer: - Option
B
27. Safety Gloves of class
& color 0 Red has maximum use A.C/D.C Voltage
of
(A) 500/750 V (B) 5000/7500 V (C)
1000/1500 V
(D) 7500/11250 V
Answer: Option C
28. Accessibility to
bare conductors is IE Rule Number
(A) 32
(B)
40
(C) 42
(D) 34
Answer: Option D
29. The MCB which is mostly preferred for domestic applications is
(A) Type K
(B)
Type B
(C) Type C
(D)
Type D
Answer: - Option
B
30. Safety Gloves
of class &
color 1 White
has maximum use A.C/D.C Voltage
of
(A) 500/750 V (B) 5000/7500 V (C)
1000/1500 V
(D) 7500/11250 V
Answer: Option D
31. The Switch
with one input terminal and one output terminal is called
(A)
SPST
(B) DPST
(C) SPDT
(D) DPDT
Answer: -
Option A
32. ICDP Stands for
(A) Iron clad Dual pole
(B)
Iron clad Double pole
(C) Iron clad Distribution pole
(D) None of the above
Answer: - Option
B
33. Safety tool used to
remove insulation from wires is
(A)
Hammer
(B) Cutter cum insulation remover
(C) Screw driver
(D) Continuity Tester
Answer: - Option
B
34. The Switch
which is mostly preferred for starting of motors is
(A) Tumbler switch
(B) Grid switch
(C) Flush switch
(D) Push button switch
Answer: -
Option D
35. The Switch
which is mostly preferred for staircase lighting
is
(A)
One way surface
switch 5 A
(B) One way surface switch 15
A
(C) Two way surface switch 5
A
(D) None of the above
Answer: -
Option C
36. The Switch which is mostly preferred
for Refrigerators is
(A)
One way surface
switch 5 A
(B)
One way surface
switch 15 A
(C) Two way surface switch 5
A
(D) None of the above
Answer: -
Option B
37. The Switch
which is mostly
preferred for incandescent lamps is
(A)
One way surface
switch 5 A
(B) One way surface switch 15
A
(C) Two way surface switch 5
A
(D) None of the above
Answer: -
Option A
38. Safety accessory used to protect
eyes of workers
from dusts, fumes
& vapors is
(A) Safety goggles
(B) Safety rubber mats
(C) Safety Boots
(D) Safety Hand gloves
Answer: - Option
A
39. The Plug which is
mostly preferred for lamps is
(A) Type A
(B)
Type B
(C) Type C
(D) Type D
Answer: - Option
A
40. The Socket
which is mostly
preferred for connecting computers is
(A)
Two pin wall socket 5A
(B)
Three pin wall
socket 5A
(C) Three pin wall socket 15A
(D) Two pin wall socket 15A
Answer: - Option
B
41. The Socket which is mostly preferred for connecting washing
machines is
(A) Two pin wall socket 5A
(B)
Three pin wall
socket 5A
(C) Three pin wall socket 15A
(D) Two pin wall socket 15A
Answer: - Option
C
42. The Socket
which is mostly preferred for connecting mobile chargers is
(A)
Two pin wall socket 5A
(B) Three pin wall socket 5A
(C) Three pin wall socket 15A
(D) Two pin wall socket 15A
Answer: - Option
A
43. Safety tool used for twisting, cutting,
gripping of round and flat objects is
(A)
Hammer
(B) Crimping tool
(C) Plier
(D) Line Tester
Answer: - Option C
44. Safety tool used for tightening and loosening screws
and slotted heads is
(A) Hammer
(B) Crimping tool
(C) Line Tester
(D) Screw driver
Answer: - Option D
45.
Safety tool used to indicate whether
there is an uninterrupted path for current flow in an Electrical
device is
(A) Hammer
(B) Crimping tool
(C) Plier
(D) Continuity Tester
Answer: - Option
D
46. Safety tool used to
test the phase or live wire is
(A)
Hammer
(B)
Knife
(C) Screw driver
(D) Tester
Answer: - Option
D
47. Safety tool used to test short circuit and open circuit
of load under test is
(A)
Hammer
(B) Crimping tool
(C) Screw driver
(D) Test lamp
Answer: - Option
D
48. Safety accessory
used to protect workers from electric shock
is
(A) Safety goggles
(B)
Safety rubber mats
(C) Safety Boots
(D) None of the above
Answer: - Option
B
49. Safety accessory
used to protect
workers who work on live circuits is
(A)
Safety goggles
(B) Safety Hand gloves
(C) Safety Boots
(D) None of the above
Answer: - Option
B
50. Safety accessory
used to protect
foot of workers from cuts, burns &
punctures is
(A)
Safety goggles
(B) Safety rubber mats
(C) Safety Boots
(D) Safety Hand gloves
Answer: - Option
C
02 – Conductors & electromagnetic materials
1. The conductor
used as filament
in incandescent lamps is
(A)
Copper
(B) Aluminium
(C) Tungsten
(D) Iron
Answer: - Option
C
2. Which metal has the
highest electrical conductivity
(A)
Copper
(B)
Aluminium
(C) Gold
(D) Silver
Answer: - Option
D
3. Which is the
strongest magnetic material of all
(A) Paramagnetic
(B)
Diamagnetic
(C) Ferromagnetic
(D) Ferrimagnetic
Answer: - Option
C
4. The Unit of
Magnetic Flux is
(A)
Tesla
(B) Weber
(C) Weber - metre
(D) None of the above
Answer: - Option
B
5. The Unit of
Magnetic Reluctance is
(A)
Henry
(B)
AT/Weber
(C) Weber/AT
(D) None of the above
Answer: - Option
B
6. Malleability is which type of property
of conducting material
(A)
Electrical
(B)
Mechanical
(C) Thermal
(D) Chemical
Answer: - Option
B
7. B in B-H curve is
known as
(A) Reluctance
(B)
Magnetizing Force
(C) Magnetic flux density
(D) Magnetic Intensity
Answer: - Option
C
8. Atomic Number of
Silver is
(A) 47
(B)
87
(C) 79
(D) 80
Answer: - Option
A
9. Atomic Number of
Copper is
(A) 78
(B)
87
(C) 29
(D) 92
Answer: - Option
C
10. The material
which is mostly
preferred for making gas filled
tubes is
(A)
Mercury
(B) Brass
(C) Copper
(D) Bronze
Answer: - Option A
11. The material
which is mostly
preferred for making
jewelry is
(A) Mercury
(B)
Brass
(C) Copper
(D) Silver
Answer: - Option D
12. Ag is the symbol of
(A)
Copper
(B) Aluminium
(C) Gold
(D) Silver
Answer: - Option D
13. MMF stands for
(A)
Magnetic Memory field
(B) Magnetic Material Force
(C) Magneto Motive Force
(D) None of the above
Answer: - Option C
14. H in B-H curve is
known as
(A) Reluctance
(B)
Magnetizing Force
(C) Magnetic flux density
(D) Magnetic Intensity
Answer: - Option
B
15. Hysteresis in
magnetic circuit is phenomenon of
(A)
Lagging of B behind
H
(B) Lagging of H behind B
(C) Setting up constant flux
(D) None of the above
Answer: - Option A
16. The SI Unit of
Actual Permeability of free space is
(A)
Henry
(B)
Henry/Metre
(C) Weber - metre
(D) Farad/Metre
Answer: - Option
B
17. Magnetic flux
passes more readily through
(A)
Wood
(B)
Air
(C) Iron
(D) Vacuum
Answer: - Option
C
18. Iron is Ferromagnetic
(A)
Below 770 Degrees Celsius
(B)
Vacuum
(C) Iron
(D) Above 770 Degrees Celsius
Answer: - Option
A
19. MMF in magnetic circuit
corresponds to in electric circuit
(A)
Potential
Difference
(B) EMF
(C) Current
(D) Resistance
Answer: - Option B
20. The B-H curve of will not be a
straight line
(A)
Wood
(B) Air
(C) Soft Iron
(D) Copper
Answer: - Option
C
21. The Relative
Permeability of Paramagnetic material is
(A)
Slightly greater
than 1
(B) Less
than 1
(C) Equal to 1
(D) Much greater than 1
Answer: - Option
A
22. Which of the following
material has least area of Hysteresis loop
(A) Wrought Iron
(B)
Hard Steel
(C) Soft Iron
(D) Silicon Steel
Answer: - Option
D
23. Flux in magnetic circuit
corresponds to in electric circuit
(A)
Potential
Difference
(B)
EMF
(C) Current
(D) Resistance
Answer: - Option C
24. The material
which is mostly
preferred for making
low current fuses
is
(A) Mercury
(B) Gold
(C) Tin
(D) Tungsten
Answer: - Option C
25. As the hysteresis loop area increases
hysteresis loss
(A) Increases
(B) Decreases
(C) Remains the same
(D) Increases or Decreases
Answer: - Option A
26. Reluctance in magnetic circuit
corresponds to in electric circuit
(A)
Potential
Difference
(B) EMF
(C) Current
(D) Resistance
Answer: - Option D
27. Resistivity is which type of property
of conducting material
(A)
Electrical
(B) Mechanical
(C) Thermal
(D) Chemical
Answer: - Option
A
28. Aluminium is an example
of material
(A) Paramagnetic
(B)
Diamagnetic
(C) Ferromagnetic
(D) Ferrimagnetic
Answer: - Option
A
29. Tungsten is in colour
(A)
Grey
(B) Reddish brown
(C) White
(D) Silver
Answer: - Option A
30. The alloy made from
copper and zinc is
(A) Brass
(B) Aluminium
(C) Bronze
(D) Steel
Answer: - Option A
31. The alloy made from
copper and tin is
((A)
Brass
(B) Aluminium
(C) Bronze
(D) Steel
Answer: - Option C
32. Lead is in colour
(A)
Bluish Grey
(B)
Reddish brown
(C) White
(D) Silver
Answer: - Option A
33. The material
which is mostly preferred for electroplating is
(A)
Copper
(B)
Nickel
(C) Lead
(D) Tin
Answer: - Option
B
34. The material
which is mostly preferred for street lighting
poles is
(A)
Mercury
(B) Gold
(C) Aluminium
(D) Silver
Answer: - Option C
35. The material
which is mostly preferred for Cable Sheathing is
(A) Copper
(B)
Aluminium
(C) Lead
(D) Silver
Answer: - Option
C
36. Nickel is an example
of material
(A) Paramagnetic
(B)
Diamagnetic
(C) Ferromagnetic
(D) Ferrimagnetic
Answer: - Option
C
37. Copper is an example
of material
(A)
Paramagnetic
(B) Diamagnetic
(C) Ferromagnetic
(D) Ferrimagnetic
Answer: - Option
B
38. The Relative
Permeability of Diamagnetic material is
(A)
Greater than 1
(B)
Less than 1
(C) Equal to 1
(D) Greater than or equal to1
Answer: - Option
B
39. ACSR conductors are
made up of
(A) Copper
(B)
Aluminium
(C) Gold
(D) Silver
Answer: - Option B
40. The material
which is mostly
preferred for Electrical wires is
(A) Copper
(B)
Tin
(C) Gold
(D) Silver
Answer: - Option A
41. The material
which is mostly
preferred for making lamp and fuse holders
is
(A) Copper
(B)
Brass
(C) Gold
(D) Silver
Answer: - Option B
42. The material
which is mostly preferred for making fan cages and fan blades
is
(A)
Copper
(B) Brass
(C) Gold
(D) Silver
Answer: - Option B
43. The material
which is mostly
preferred for making
bus bars is
(A)
Copper
(B)
Brass
(C) Gold
(D) Silver
Answer: - Option A
44. The material
which is mostly preferred for making motor
bearings is
(A) Copper
(B)
Brass
(C) Gold
(D) Silver
Answer: - Option B
45. The material
which is mostly
preferred for making
contact wires and commutator segments
is
(A) Copper
(B)
Brass
(C) Bronze
(D) Silver
Answer: - Option C
46. The material
which is mostly
preferred for making
brush holders is
(A)
Copper
(B) Brass
(C) Bronze
(D) Silver
Answer: - Option C
47. The material
which is mostly
preferred for making current carrying
springs is
(A)
Copper
(B) Brass
(C) Bronze
(D) Silver
Answer: - Option C
48. Which is the
weakest magnetic material of all
(A)
Paramagnetic
(B) Diamagnetic
(C) Ferromagnetic
(D) Ferrimagnetic
Answer: - Option
B
49. The Unit of
Magnetic Flux Density is
(A)
Tesla
(B)
Weber
(C) Weber - metre
(D) None of the above
Answer: - Option
A
50. The material
which is mostly
preferred for making sparking plug electrodes is
(A) Mercury
(B) Nickel
(C) Copper
(D) Silver
Answer: - Option B
Also Read:-22324 Electrical Circuits MCQs for Electrical Engineering PDF
03 – Electric insulating materials
Significance &
properties of electric
insulating materials: electrical, mechanical & properties.
Thermal
classification of insulators, classes of insulators.
Dielectric failure
of insulating materials. (Gaseous, liquid & solid state).
Applications of insulating material
in electrical machines
& devices.
1. Insulation Resistance is which type of property
of conducting material
(A)
Electrical
(B) Mechanical
(C) Thermal
(D) Chemical
Answer: - Option A
2. Dielectric Strength
is property of
conducting material
(A)
Electrical
(B) Mechanical
(C) Thermal
(D) Chemical
Answer: - Option
A
3. Thermal Stability is which type of property
of conducting material
(A)
Electrical
(B) Mechanical
(C) Thermal
(D) Chemical
Answer: - Option
C
4. Melting Point is which type of property of conducting material
(A)
Electrical
(B)
Mechanical
(C) Thermal
(D) Chemical
Answer: - Option
C
5. Volatility is property of
conducting material
(A)
Electrical
(B) Mechanical
(C) Thermal
(D) Chemical
Answer: - Option C
6. Class Y Insulating material
has limiting operating temperature of
(A)
90 º C
(B) 105 º C
(C) 120 º C
(D) 130 º C
Answer: - Option
A
7. Class A Insulating material
has limiting operating
temperature of
(A)
90 º C
(B)
105 º C
(C) 120 º C
(D) 130 º C
Answer: - Option
B
8. Class E Insulating material
has limiting operating
temperature of
(A)
90 º C
(B)
105 º C
(C) 120 º C
(D) 130 º C
Answer: - Option
C
9. Class B Insulating material
has limiting operating
temperature of
(A)
90 º C
(B) 105 º C
(C) 120 º C
(D) 130 º C
Answer: - Option
D
10. The material
which is mostly
preferred for making
Switch Board is
(A)
Silk
(B)
Pressboard
(C) Paper
(D) Wood
Answer: - Option
D
11. The material
which is mostly
preferred for making
terminal box is
(A)
Silk
(B) Pressboard
(C) Paper
(D) Wood
Answer: - Option
D
12. The material
which is mostly
preferred for Pin type Insulator
is
(A) Porcelain
(B) Pressboard
(C) Paper
(D) Silk
Answer: - Option
A
13. The material
which is mostly
preferred for Suspension type Insulator is
(A) Porcelain
(B)
Pressboard
(C) Paper
(D) Silk
Answer: - Option
A
14. The material
which is mostly
preferred for Strain
type Insulator is
(A)
Porcelain
(B) Pressboard
(C) Paper
(D) Silk
Answer: - Option
A
15. The material
which is mostly
preferred for transformer bushing is
(A)
Silk
(B) Pressboard
(C) Paper
(D) Porcelain
Answer: - Option
D
16. The material
which is mostly preferred for Commutator segment
insulation is
(A)
Silk
(B)
Pressboard
(C) Paper
(D) Mica
Answer: - Option
D
17. Class F Insulating material
has limiting operating
temperature of
(A)
90 º C
(B)
155 º C
(C) 120 º C
(D) 130 º C
Answer: - Option
B
18. Class H Insulating material
has limiting operating temperature of
(A)
90 º C
(B) 105 º C
(C) 180 º C
(D) 130 º C
Answer: - Option
C
19. The material
which is mostly
preferred as coolant
in transformer is
(A)
Mineral oil
(B)
Pressboard
(C) Paper
(D) Mica
Answer: - Option
A
20. The material
which is mostly
preferred to suppress
corona and arcing
is
(A)
Askarel
(B)
Pressboard
(C) Paper
(D) Mica
Answer: - Option
A
21. The material
which is mostly preferred as binders for mica and glass is
(A) Mineral oil
(B)
Pressboard
(C) Paper
(D) Adhesive Varnish
Answer: - Option
D
22. The material
which is mostly
used as coating on electronic equipment
(A) Enamel
(B) Pressboard
(C) Paper
(D) Mica
Answer: - Option
A
23. The material
which is mostly preferred to suppress corona
and arcing
(A)
Askarel
(B) Pressboard
(C) Paper
(D) Mica
Answer: - Option
A
24. The material
which is mostly preferred for cooling alternators is
(A)
Hydrogen
(B) Pressboard
(C) Paper
(D) Mica
Answer: - Option
A
25. The material
which is mostly used in high voltage
switchgears is
(A)
Hydrogen
(B) Sulphur Hexafluoride
(C) Paper
(D) Mica
Answer: - Option
B
26. The material which
is used in high voltage cables is
(A) Hydrogen
(B)
Sulphur
Hexafluoride
(C) Paper
(D) Mica
Answer: - Option
B
27. The material which is mostly
preferred to reduce
windage loss in high speed
machines
(A) Hydrogen
(B)
Pressboard
(C) Paper
(D) Mica
Answer: - Option
A
28. The only insulator used under pressure
in certain capacitors
(A) Hydrogen
(B)
Pressboard
(C) Paper
(D) Nitrogen
Answer: - Option
D
29. The material
which is mostly
used in high voltage circuit
breakers is
(A)
Hydrogen
(B) Sulphur Hexafluoride
(C) Paper
(D) Mica
Answer: - Option
B
30. The material
which is mostly
used in Gas Insulated Substation is
(A)
Hydrogen
(B)
Sulphur
Hexafluoride
(C) Paper
(D) Mica
Answer: - Option
B
Also Read:-22324 Electrical Circuits MCQs for Electrical Engineering PDF
Also Read:- Fundamentals of Power Electronics 22326 MCQs For MSBTE Exam
Also Read:- Electrical and electronics Measurements 22325 MCQs for Electrical Engineering
04 – Electrical wiring
Types wires & cables,
components and accessories of electrical wiring systems.
Electrical wiring systems (Such as casing
& capping etc.)
Electrical wiring types (one lamp control,
staircase & godown)
Cable Laying,
Cable joints (terminations), proper size lugs, crimping of joints.
1. The material used
for armouring on cable is usually
A. Steel tape
B. galvanised steel wire
C. any of the above
D. None of the above
Answer: - Option
C
2. The insulating
material for cables should be
A. acid proof
B. non-inflammable
C. non-hygroscopic
D. all above properties
Answer: - Option
D
3. The minimum
dielectric stress in a cable is at
A. Armour
B. bedding
C. conductor surface
D. lead sheath
Answer: - Option
D
4. Which of the following
protects a cable against mechanical injury?
A. Bedding
B. sheath
C. armouring
D. Any of the above
Answer: - Option
C
5. The bedding on a
cable consists of
A. Jute strands
B. hessian tape
C. paper tape compounded with a fiberous material
D. Any of the above
Answer: - Option
D
6. Low tension cables
are generally used upto
A.200 V
B.500 V C.700 V D.1000 V
Answer: - Option
D
7. High tension cables
are generally used upto
A.11 KV
B.33 KV
C.66 KV
D.132
KV
Answer: - Option
A
8. Pressure cables are
generally used beyond
A.11 KV
B.33 KV
C.66 KV
D.132
KV
Answer: - Option
C
9. The thickness of insulation layer
provided on the conductor, in cables, depends
upon
A. Operating voltage
B. Current to be carried
C. Power factor
D. both A and B
Answer: - Option A
10. With the rise in temperature, the insulation resistivity of a cable
A. Remain unchanged
B. Decreases linearly
C. Increases linearly
D. Reduces exponentially
Answer: - Option
D
11. The breakdown
voltage of a cable depends on
A. Presence of moisture
B. Working temperature
C. Time of application of the
voltage
D. All of the above
Answer: - Option
D
12. In the cables
sheaths are used to
A. Prevent the moisture entering the cable
B. Provide enough strength
C. Provide enough insulation
D. None of the above
Answer: - Option
A
13. Which types of
cables are used for 132KV lines?
A. High tension
B. Super tension
C. Extra high tension
D. Extra super tension
Answer: - Option
D
14. For voltages
less than 66KV a 3 phase cable usually consists
of
A. 3 core cable
B. 3 single core cable
C. Double core cable
D. None of the above
Answer: - Option
A
15. If the length of a
cable is doubled its capacitance is
A. Doubled
B. Halved
C. Quadrupled
D. None of the above
Answer: - Option
A
16. In a cable the maximum stress
under operating conditions is at
A. Insulation layer
B. Sheath
C. Armour
D. Conductor surface
Answer: - Option
D
17. Underground cables
are laid at sufficient depth so as to
A. Minimise temperature stresses
B. Minimise effects of shocks and vibrations owing to passing
vehicles etc.
C. Avoid being unearthed easily owing to removal of soil
D. Both A and C
Answer: - Option
B
18. The wiring which is
mostly preferred for Hospitals
(A)
Concealed Conduit Wiring
(B) Cleat Wiring
(C) Batten Wiring
(D) Wooden Casing and Capping
Answer: - Option
A
19. The wiring which is mostly preferred for spinning mill
(A) Conduit Wiring
(B)
Cleat Wiring
(C) Batten Wiring
(D) Wooden Casing and Capping
Answer: - Option
A
20. The wiring
which is mostly
preferred for Milk dairy
(A) CTS Wiring
(B) Cleat Wiring
(C) Batten Wiring
(D) Wooden Casing and Capping
Answer: - Option
A
21. The wiring which is
mostly preferred for Hotels
(A)
Concealed Wiring
(B) Cleat Wiring
(C) Batten Wiring
(D) Wooden Casing and Capping
Answer: - Option
A
22. ELCB gives
protection against
(A)
Shock
(B) Overload
(C) Short Circuits
(D) All of the above
Answer: - Option
A
23. MCB Stands for
(A) Moulded case breaker
(B)
Miniature circuit breaker
(C) Miniature case breaker
(D) Moulded circuit breaker
Answer: - Option
B
24. MCB gives protection against
(A)
Shock
(B) Overload
(C) Short Circuits
(D) Overload and Short Circuits
Answer: - Option
D
25. The cheapest type
of wiring is
(A)
Concealed Wiring
(B) Cleat Wiring
(C) Batten Wiring
(D) Wooden Casing and Capping
Answer: - Option
B
26. The costliest type
of wiring is
(A) Concealed Wiring
(B) Cleat Wiring
(C) Batten Wiring
(D) Wooden Casing and Capping
Answer: - Option
A
27. The materials
used for armouring of an underground cable is
A. Galvanised steel wire
B. Steel tape
C. Aluminium
D. Either A or B
Answer: - Option D
28. Metallic shielding
is provided on underground cables to
A. Reduce thermal resistance
B. Reduce corona effect
C. Control the electrostatic voltage stress
D. All of the above
Answer: - Option
D
29. The breakdown
voltage of a cable depends upon
A. Presence of moisture
B. Operating temperature
C. Time of application of the
voltage
D. All of the above
Answer: - Option
D
30. Cables for 220 KV lines
A. Mica insulated
B. Paper insulated
C. Compressed oil or compressed gas insulated
D. Rubber insulated
Answer: - Option
C
Also Read:-22324 Electrical Circuits MCQs for Electrical Engineering PDF
Also Read:- Fundamentals of Power Electronics 22326 MCQs For MSBTE Exam
05 – Earthing Systems
Types of earthing systems.
Installation of earthing systems.
Testing/measurement of earthing
resistance for various
installations as per IE rules.
Significance and adverse effects of improper earthing systems.
1. The ground wire is coloured
A. Green
B. Black
C. Yellow
D. Red
Answer: - Option
A
2. The maximum
permissible value of earth resistance for major substation is
A. 0.5 Ohms
B. 1 Ohms
C. 2 Ohms
D. 5 Ohms
Answer: - Option
B
3. Earthing is
necessary to give protection against
A. Danger of electric shock
B. Voltage fluctuation
C. Overloading
D. High temperature of the conductors
Answer: - Option A
4. The maximum
permissible value of earth resistance for power station
is
A. 0.5 Ohms
B. 1 Ohms
C. 2 Ohms
D. 5 Ohms
Answer: - Option
A
5. Solid grounding is
adopted for voltages below
A. 100 V
B. 200 V
C. 400 V
D. 660 V
Answer: - Option
D
6. The maximum
permissible value of earth resistance for minor substation is
A. 0.5 Ohms
B. 1 Ohms
C. 2 Ohms
D. 5 Ohms
Answer: - Option
C
7. The advantage of
neutral earthing is
A. Freedom from persistent arcing grounds
B. Over voltages due to lightning can be discharged to earth
C. Simplified design earth fault protection
D. All of the above
Answer: - Option
D
8. The maximum
permissible value of earth resistance for residential wiring
is
A. 0.5 Ohms
B. 1 Ohms
C. 5 Ohms
D. 2 Ohms
Answer: - Option
C
9. The advantage of
neutral earthing
A. Safety of personnel
B. Reduction of earth fault
current
C. Elimination of arcing ground
D. None of the above
Answer: - Option
C
10. The maximum
permissible value of earth resistance for H.T Line is
A. 0.5 Ohms
B. 1 Ohms
C. 5 Ohms
D. 10 Ohms
Answer: - Option
D
11. The maximum
permissible value of earth resistance for L.T Line is
A. 0.5 Ohms
B. 1 Ohms
C. 5 Ohms
D. 2 Ohms
Answer: - Option C
12. The maximum
permissible value of earth resistance for Tower footing
resistance is
A. 10 Ohms
B. 1 Ohms
C. 5 Ohms
D. 2 Ohms
Answer: - Option
A
13. The maximum
permissible value of earth resistance for DTR structures is
A. 10 Ohms
B. 1 Ohms
C. 5 Ohms
D. 2 Ohms
Answer: - Option
C
14. If soil resistivity
increases then earth resistance
A. Increases
B. Decreases
C. Remains same
D. Either A or B
Answer: - Option A
15. If moisture
content in soil increases then earth resistance
A. Increases
B. Decreases
C. Remains same
D. Either A or B
Answer: - Option B
16. If earth electrode is buried deep inside the soil then earth resistance
A. Increases
B. Decreases
C. Remains same
D. Either A or B
Answer: - Option B
17. If earth electrode is buried deep inside the soil then earth resistance
A. Increases
B. Decreases
C. Remains same
D. Either A or B
Answer: - Option B
18. If earth electrode is buried deep inside the soil then earth resistance
A. Increases
B. Decreases
C. Remains same
D. Either A or B
Answer: - Option B
19. If powder
of charcoal and salt is added inside
the soil then earth resistance
A. Increases
B. Decreases
C. Remains same
D. Either A or B
Answer: - Option B
20. If electrode size
is increased then earth resistance
A. Increases
B. Decreases
C. Remains same
D. Either A or B
Answer: - Option B
21. Earth resistance
should be
A. Low
B. High
C. Very High
D. Either B or C
Answer: - Option A
22. Factors on which
earth resistance depends are
A. Depth of electrode
B. Moisture
C. Salt
D. All of the above
Answer: - Option
D
23. Earth wire or ground
wire is made of
(A)
Copper
(B) Aluminium
(C) Galvanised Steel
(D) Iron
Answer: - Option
C
24. The size of earth wire or ground wire depends
on
(A) Rated current carrying capacity of the
service line
(B)
Depends
on the soil resistance
(C) Maximum fault current
carrying through the ground wire
(D) Both (B) and
(C)
Answer: - Option
D
25. Earth electrode
used in plate earthing
A. Plate
B. Pipe
C. Rod
D. Grid
Answer: - Option
A
26. The material used
in plate earthing
A. Salt
B. Charcoal
C. GI wire
D. All of the above
Answer: - Option
D
27. The size of plate electrode in inches in plate earthing
is
A. 0.25 inches
B. 0.5 inches
C. 0.75 inches
D. 0.9 inches
Answer: - Option
A
28. The size of SWG for
pipe earthing is
A. 12 SWG
B. 16 SWG
C. 8 SWG
D. 20 SWG
Answer: - Option
C
29. Which of the following is the cheapest
method of earthing
A. Pipe Earthing
B. Plate Earthing
C. Split Earthing
D. Rod Earthing
Answer: - Option C
30. The earth potential
is taken as
A. Zero
B. Infinite
C. 1 Volt
D. 10 Volt
Answer: - Option
C
5 sem mcq electrical engg
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