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 can be increased by inserting a
A:-Brass core
-lron 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
0.7۴۳
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 signal (F) and time period (T) is

A "FST*2"
8-೯ = 2T
C.F = LT
D:-F = 1/2T

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 =
4:11 + 12
8:11 > 12/॥ 1 + 12
C:-L1 x L2
D:-L1 + L2/L1 x L2
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 windings
C:-3 primary and 3 secondary windings
D:-3 primary and 6 secondary windings
Correct Answer:- Option-C
Question47:-A transformer has 800 turns in its primary winding and 200 in its secondary what is the primary voltage, if the
secondary voltage is 40 V? Assume transformer losses as negligible?
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