22324 Electrical Circuits MCQs for Electrical Engineering PDF
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22324 Electrical Circuits Mcq Test Paper
1. Conductance is imaginary part of the admittance (Y)
(a) True
(b) False Answer
Reason: Conductance is defined as the real part of the admittance
2. A loop is any closed path in a circuit, in which no node is encountered more than once
(a) True Answer
(b) False
3. A mesh is a loop that has no other loops inside of it
(a) True Answer
(b) False
4. Every loop is a mesh
(a) True
(b) False Answer
Reason: Every loop is not a mesh
5. Active power (P) is given by the product of voltage, current and the cosine of the phase
angle between voltage and current.
(a) True Answer
(b) False
6. The quality factor or Q-factor of parallel circuit is defined as the ratio of the current circulating between two branches of the circuit to the current taken by the parallel circuit from the source
(a) True Answer
(b) False
7. Every mesh is not a loop
(a) True
(b) False Answer
Reason: Every mesh is a loop
8. Neutral or the star point exists in the star connection.
(a) True Answer
(b) False
Delta Connection Line voltage is equal to the Phase voltage.
(a) True Answer
(b) False
Susceptance is defined as the real part of the admittance
(a) True
(b) False Answer
Reason: Susceptance is imaginary part of the admittance (Y)
Reactive power (Q) is given by the product of voltage, current and the sine of the phase
angle between voltage and current
(a) True Answer
(b) False
In Delta Connection The end of each coil is connected to the starting point of the other coil that means the opposite terminals of the coils are connected together to form a closed loop.
(a) True Answer
(b) False
If One terminal of each of the three branches are connected together to form a common point. Such a connection is known as Delta Connection
(a) True
(b) False Answer
Reason: The three branches of the network are connected in such a way that it forms ac closed loop. Such a connection is known as Delta Connection
Admittance is defined as the ability of the AC circuit to carry (admit) alternating current
(a) True Answer
(b) False
Neutral point does not exist in the delta connection.
(a) True Answer
(b) False
The three branches of the network are connected in such a way that it forms a closed loop.
Such a connection is known as Star Connection
(a) True
(b) False Answer
Reason: One terminal of each of the three branches are connected together to form a
common point. Such a connection is known as Star Connection
The Star Connection Line current is equal to the Phase current.
(a) True Answer
(b) False
Advantages of polyphase circuits
(a) Three-phase transmission is more economical than single-phase transmission. It requires
less copper material.
(b) Parallel operation of 3-phase alternators is easier than that of single-phase alternators.
(c) Single-phase loads can be connected along with 3-ph loads in a 3-ph system
(d) Instead of pulsating power of single-phase supply, constant power is obtained in 3-phase
system
(e) All of the above Answer
Impedance of Series Resonant Circuit
(a) Maximum Z= R ohms
(b) Minimum Z= R ohms Answer
(c) Minimum R= Z ohms
(d) Maximum R= Z ohms
State any four properties of Parallel Resonance.
(a) At resonance, the parallel RLC circuit behaves as a purely resistive circuit.
(b) At resonance, the Parallel RLC circuit power factor is unity
(c) At resonance, in parallel RLC circuit, current magnification takes place
(d) Parallel RLC resonant circuit is Rejector circuit.
(e) All of the above Answer
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Electrical circuits mcq questions and answers pdf
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