Correct Answer:- Option-D
Question48:-Efficiency of a transformer is the ratio of

A:-Output power to input power

B:-Input power to output power

C:-Input current to output current

D:-Output current to input current

Correct Answer:- Option-A
Question49:-The basic unit of capacitance 15

A:-Ohm

B:-Farad

C:-Henry

D:-Mho

Correct Answer:- Option-B
Question50:-The relationship between charge (Q), voltage (V) and capacitance (C) of a capacitor is
ALC=QV

Qv
മഡ്‌
0:-0- 0

Correct Answer:- Option-A
Question51:-ldentify the instrument which is NOT used for measurement of capacitance
A:-Digital capacitance meter
B:-AC bridge
C:-RLC meter
D:-Kelvin bridge
Correct Answer:- Option-D
Question52:-The capacitive reactance Xc is given by

8:-1/2 गि 6८
೧:2 ೫7/೯೦
0:72 गि
Correct Answer:- Option-B
Question53:-Current flowing through a capacitor is given by

Correct Answer:- Option-C
Question54:-A semi conductor in its pure form is referred to as
A:-Intrinsic semiconductor
B:-Extrinsic semiconductor
C:-Crystal semiconductor
D:-Doped semiconductor
Correct Answer:- Option-A
Question55:-The process of adding impurities to a pure semiconductor
A:-Diffusion
B:-Forming
C:-Etching
D:-Doping
Correct Answer:- Option-D
Question56:-The potential difference across a PN junction is referred to as
A:-Potential difference
B:-Bamier potential
C:-Reverse potential
D:-PN potential
Correct Answer:- Option-B
Question57:-When a germanium diode is connected in forward biased mode the voltage across the diode will be
‏۷ھ‎
‎8:-0.3 ४
C:-Is equal to applied voltage