Top Electrical Engg MCQ - 500+ MCQ
61
In AC circuit analysis, the reciprocal of Impedance (Z) is known as:
62
The function of the choke coil in a standard fluorescent tube light circuit is to:
63
Which of the following can be measured by conducting insulation resistance test on a synchronous motor?
64
Reduction in the capacitance of a capacitor- start motor results in reduced ____.
65
Determine the Thevenin's equivalent resistance (in ohms) across terminals A and B for the electrical circuit given below.
66
An over excited synchronous motor is used for ____.
67
A transmission line consists of which of the following distributed constants?
68
The cable rating suitable for connecting a load of 3 kW to a single-phase supply of 230 V is
69
If the capacitor of a single-phase motor is short-circuited
70
The another name of neutral earthing is
71
If 's' is the slip and 'f' is the supply frequency, the rotor frequency of a 3-phase induction motor is given by:
72
Which of the following electrical faults is the most common in power systems?
73
Which of the following logic gates is considered a "Universal Gate"?
74
What will be the reading (in kW) of both the wattmeter used to measure the power of a three-phase three wire system having input of 7 kW and power factor 1?
75
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76
Megger is used to measure ____ resistance.
77
A synchronous motor is NOT a self-starting motor because:
78
The resonant frequency of the given series circuit is
79
A parallel circuit consists of a coil whose resistance and inductance is 10 ohms and 250 mH respectively and is connected in parallel with a capacitor of 0.0025 mF. Calculate the resonant frequency (in Hz) of the circuit.
80
While starting a synchronous motor as induction motor, field winding is