Hii Friends in today's article or post our team is providing Very Important MCQ's Related DC Generator So if this remains helpfull to you. You all can share this Post with your Friends.
- The yoke of a DC machine is made up of
…….
Silicon steel
Soft iron
Aluminium
Cast steel
- A 4 pole DC machine has……… magnetic
circuit
2
8
4
6
- The number of parallel paths in the simplex
lap winding is equal to ………
2
Number of pair of pole
Number of poles
1
- Fleming's right hand is applicable to ……
Dc motor
Alternator
Transformer
Dc generator
- A brush voltage drop in a DC machine is
about….
0.1 V
10 V
2 V
20 V
- In the lap winding, the number of the
brushes required is equal to ….
Number of poles
Number of pair of pole
Commutator pitch
Pole pitch
- The greatest eddy current loss occur in the
…….. of dc machine
Field pole
Yoke
Commutating pole
Armature
- A commutator of DC generators acts as…..
An amplifier
A rectifier
A load
Mechanical load
- A 6 pole lap wound dc generator has 6000
conductors on its armature. The flux per
pole is 0.02 wb. The speed at which the
generator must be run to generate 300 V is
…..
750 rpm
1000 rpm
1500 rpm
1450 rpm
- The terminal voltage of a ………….
Generator varies widely with changes in
load current
Series
Shunt
Flat compound
Differential
- The efficiency of a DC generator means
its ……..
Electrical efficiency
Overall efficiency
Mechanical efficiency
Chemical efficiency
- High voltage DC machine use …..
Winding
Lap
Wave
Interpole
compensating
For the same rating, a DC machine has
….. An AC machine
The same weight as
More weight than
Less weight than
Less than 10%
- The maximum efficiency of a DC
generator is maximum when its variable
loss is ……..
Equal to constant loss
Equal to half of constant loss
Equal to double the line loss
Equal to 10 times the line loss
- In a practical DC generator, mechanical
efficiency is …….
Less than electrical efficiency
More than electrical efficiency