ELECTRICAL ENGINEERING WRITTEN TEST QUESTIONS -102

1. Which of the following motors is used in tape-recorders ?
A) Hysteresis motor
B) Capacitor-run motor
C) Reluctance motor
D) Universal motor

2. To generates a 50Hz frequency, the RPM of a generator is must be
A. 1500
B. 3000
C. 750
D. no of the above

3. On which rule the d.c motor works?
A. Flemings right hand rule
B. Fiemings left hand rule
C. Both rules
D. None

4. diode is on state__________
A. forward bias
B. revers bias
C. both 1 and 2
D. none

5. The friction losses in Real Transformers are _________?
A.0%
B.5%
C.25%
D.50%

6. carbon is an example of ............ ?
A. compound
B. mixture
C. element

D. semi-conductor

7. P.f. is in ______.
A. AC
B. DC
C. both
D. none of above

8. Megger me controlling torqe kisse generate ki jati hai ......?
A. spring control
B. gravity control
C. coil ( C.C and P.C )
D. current coil
E. potential coil