A:-Temporary voltage source
B:-Magnetic energy source
C:-Constant current source
D:-Switch
Correct Answer:- Option-A
2:-The relation between frequency of an AC signal (F) and time period (T) is .
A:-`"F=T^2"`
Correct Answer:- Option-A
2:-The relation between frequency of an AC signal (F) and time period (T) is .
A:-`"F=T^2"`
B:-F = 2T
C:-F = 1/T
C:-F = 1/T
D:-F = 1/2T
Correct Answer:- Option-C
3:-A motor converts electrical energy into .
A:-Magnetic energy
Correct Answer:- Option-C
3:-A motor converts electrical energy into .
A:-Magnetic energy
B:-Mechanical energy
C:-Potential energy
D:-Chemical energy
Correct Answer:- Option-B
4:-When 2 inductors are in parallel, the effective value of inductance is given by LT = .
A:-L1 + L2
B:-L1 × L2/L1 + L2
Correct Answer:- Option-B
4:-When 2 inductors are in parallel, the effective value of inductance is given by LT = .
A:-L1 + L2
B:-L1 × L2/L1 + L2
C:-L1 × L2
D:-L1 + L2/L1 × L2
Correct Answer:- Option-B
5:-The process of adding impurities to a pure semiconductor .
A:-Diffusion
D:-L1 + L2/L1 × L2
Correct Answer:- Option-B
5:-The process of adding impurities to a pure semiconductor .
A:-Diffusion
B:-Forming
C:-Etching
D:-Doping
Correct Answer:- Option-D
6:-The chemical used for removing copper from copper clad boards is called .
A:-Thinner
Correct Answer:- Option-D
6:-The chemical used for removing copper from copper clad boards is called .
A:-Thinner
B:-Remover
C:-Eraser
D:-Etchant
Correct Answer:- Option-D
7:-In amplifiers, transistors are used for .
A:-Enlarging small electronic signals
Correct Answer:- Option-D
7:-In amplifiers, transistors are used for .
A:-Enlarging small electronic signals
B:-Switching purposes
C:-Reducing electronic signals
D:-Both the purposes mentioned in (1) and (2)
C:-Reducing electronic signals
D:-Both the purposes mentioned in (1) and (2)
Correct Answer:- Option-A
8:-A transistor can be thought of as two PN junction diodes connected as .
A:-PNPN
8:-A transistor can be thought of as two PN junction diodes connected as .
A:-PNPN
B:-PNNP
C:-NPNP
D:-NNPP
Correct Answer:- Option-B
9:-The advantage of transistors over vacuum tubes is .
A:-Very small size
B:-Minimum power loss in the form of heat
Correct Answer:- Option-B
9:-The advantage of transistors over vacuum tubes is .
A:-Very small size
B:-Minimum power loss in the form of heat
C:-Low operating voltage
D:-All the three, mentioned above
D:-All the three, mentioned above
Correct Answer:- Option-D
10:-NPN transistors are preferred to PNP transistors for .
A:-Higher switching speed
B:-Easy use in +ve supply rail
C:-A wide range of operating temperature
10:-NPN transistors are preferred to PNP transistors for .
A:-Higher switching speed
B:-Easy use in +ve supply rail
C:-A wide range of operating temperature
D:-The reasons mentioned in (1) and (2)
Correct Answer:- Option-A
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