Top Electrical Engg MCQ - 500+ MCQ
21
In resistance welding, the SCR contactor will close during
22
Determine the required value of shunt resistance (in Ohms) to convert a galvanometer into ammeter for reading up to 12 A, when the internal resistance of the galvanometer is 30 Ohms and the value of current for full scale deflection is 0.1 A.
23
Anderson Bridge is used for the measurement of an unknown ____.
24
For the transmission of same power
25
Dynamic braking can be used for which of the following?
26
Which of the following is NOT an advantage of semiconductor as compared to conventional strain gauges?
27
The power factor of a purely resistive circuit is:
28
A locomotive exerts a tractive effort of 35,300 N in hauling a train at 48kmph on the level track. If the motor is to haul the same train on a gradient of 1 in 50 and the tractive effort required is 55,180N, determine the power delivered by the locomotive if it is driven by (i) dc series motors (ii) induction motors.
29
Miniature Circuit Breakers (MCB) are used in domestic and commercial installations for control and protection. What is the range of current rating of single pole MCB commercially available?
30
For an ABCD parameter of a transmission line, which of the following is correct?
31
The energy stored in a capacitor of capacitance 'C' charged to a voltage 'V' is given by:
32
Determine the resonant frequency (in kHz) of a tank circuit, when the capacitance and inductance of the circuit is 0.08 mF and 0.08 mH respectively.
33
Now-a-days, aluminium wires are more widely used than copper because
34
In TIG (Tungsten Inert Gas) welding, the electrode used is:
35
In flash-butt welding
36
The commutator in a D.C. machine acts as
37
A single phase Hysteresis motor
38
Which of the following has the highest mobility?
39
A Cathode Ray Oscilloscope (CRO) uses which method for focusing the electron beam?
40
The phenomenon of Corona in overhead transmission lines is accompanied by: