A:-DC shunt motor
B:-DC series motor
C:-DC short-shunt compound motor
D:-DC long-shunt compound motor
Correct Answer:- Option-B
Question39:-The flux density of a coil ‏مق‎ be increased by inserting वे
A:-Brass core
B:-Iron core
C:-Rubber core
D:-Plastic core
Correct Answer:- Option-B
Question40:-The frequency of induced emf in an AC generator is given by
A:-120/PN
B:-120P/N
C:-PN/120
D:-120N/P
Correct Answer:- Option-C
Question41:-A charged capacitor acts like a
A:-Temporary voltage source
B:-Magnetic energy source
C:-Constant current source
D:-Switch
Correct Answer:- Option-A
Question42:-The relation between frequency of an AC 510721 (೧) and time period (T} is

CF=1T
D:F = 1/27
Correct Answer:- Option-C
Question43:-A motor converts electrical energy into
A:-Magnetic energy
B:-Mechanical energy
C:-Potential energy
D:-Chemical energy
Correct Answer:- Option-B
Question44:-When 2 inductors are in parallel, the effective value of inductance is given by LT =
&:-11 + 12
8:11 > L21 + 12
11 > 12
0:11 + 12/11 + 12
Correct Answer:- Option-B
Question45:-A transformer is an electrical device used to
A:-change the frequency of applied AC voltage
B:-transfer electrical energy from one circuit to another without any direct electrical connection
C:-convert applied DC into AC
D:-convert applied AC into DC
Correct Answer:- Option-B
Question46:-A 3-phase transformer has
A:-1 primary and 3 secondary windings
B:-3 primary and 1 secondary wi
C:-3 primary and 3 secondary wi
D:-3 primary and 6 secondary windings
Correct Answer:- Option-C
Question47:-A transformer has 800 tums in its primary winding and 200 in its secondary what is the primary voltage, if the
secondary voltage is 40 V7 Assume transformer losses as negligible?
A8V
6۷
‏رت‎
‎0:-160 ४