‘Compound generator
B:-Shunt generator
Series generator
D:-Differentially compound generator
Correct Answer:- Option-8
Question66:-For high starting torque which type of DC motors used ?
॥ ‏وها‎ motor
B:-Shunt motor

CCumulative compound motor

Differential compound motor
Correct Answer:- Option-A

Question67:-The maximum power output for DC motor is at

Eb = 098/2
Correct Answer: Option-8

Question68:-In wardleonard method of speed control the DC motor is
AsShunt motor
B:-Separately excited motor

C-Compound motor

-Series motor
Correct Answer: Option-8
Question69:-The function of the starter in a DC machine is
AsTo avoid armature reaction
B:-To control the speed
To avold excessive current at starting
DTo avold excessive heating
Correct Answer Option-C
Question70:-Which type starter is used for starting DC series motor ?
AcThree point starter
B:-Four point starter
CAutotransformer starter
D:wo point starter
Correct Answer:- Option-D
Question71-The maximum speed of a four pole altemator ata frequency of 50 He will be
1000 rpm
2:3000 rpm
0:1500 pm

750 rpm

Correct Answer

> Option-C
Question72:-Crawling occurs in induction motors are due to
A-Overload
B:-Harmonics developed in the motor
C:-Laminated bearings
D:-Low supply voltage
Correct Answer:- Option-B
Question73:-Which motor is one which operates on AC and DC supply ?
‘A-Capacitor start motor
B:-Repulsion motor

௦

Resistance start induction run motor
D:-Universal motor
Correct Answer:- Option-D

Question74:-In a shaded pole single phase motor the revolving field is produced by the use of
Asinductor

B:-Capacitor