A:-0.821
B:-0.752
C:-0.886
D:-0.786
Correct Answer:- Option-D
Question39:-Over load coil of 3 point DC motor starter is connected
A:-in series with shunt field
B:-in parallel with shunt field
C:-in series with armature ലി
D:-in parallel with series field
Correct Answer:- Option-C
Question40:-The speed of DC shunt motor is drops slightly from no load to full load is due to
A:-Increase in back emf
B:-Decrease in field flux
C:-laRa drop in armature
D:-Increase in field flux
Correct Answer:- Option-C
Question41:-Resistance above Q is called high resistance.
A:-100000 Q
B:-10000 Q
C:-10000000 Q
D:-1000000 Q
Correct Answer:- Option-A
Question42:-Regenerative braking is possible when the speed of the motor is
A:-Bellow synchronous speed
B:-Above synchronous speed
C:-Same as synchronous speed
D:-All of the above
Correct Answer:- Option-B
Questiond3:-V-curve of a synchronous motor is the relation between
A:-supply voltage and current
B:-armature current and field current
C:-armature voltage and ammature current
D:field voltage and field current
Correct Answer:- Option-B
Question44:-Series type ohm meter is best suited for measuring
A:-medium resistance
:-high resistance
C:-low resistance
D:-all of the above
Correct Answer:- Option-A
Question45:-Fourth colour band of a resistance is brown in four colour band system, the tolerance of the resistance 15
2:-2%
8:-5%
C:-1%
0:-3%
Correct Answer:- Option-C
Question46:-A semiconducting material numbered as BC 149, the device is
A:-Germanium transistor

D:
Correct Answer:- Option-C
Question47:-The capacity of cells are usually expressed in
A:-Watt-hour
B:-Kilo volt ampere
C:-Kilo watt hour
D:-Ampere hour
Correct Answer:- Option-D