1. . In P-N-P transistor, base will be of
(A) P material
(B) N material
(C) Either of the above
(D) None of the above
2. . A dot near the transistor pin denotes
(A) Emitter
(B) Base
(C) Collector
(D) None of the above
3. . .........is the region of transistor which has highest conductivity
(A) Base
(B) Emitter
(C) Collector
(D) Any of the above
4. . In NPN transistor majority carriers are
(A) Electrons
(B) Neutrons
(C) Holes
(D) Both A and C
5. . It collects majority carriers
(A) Emitter
(B) Base
(C) Collector
(D) All of these
6. . It controls the flow of electrons
(A) Emitter
(B) Base
(C) Collector
(D) None of these
7. . This region of transistor is highly doped
(A) Emitter
(B) Base
(C) Collector
(D) B and C both
8. . The base emitter junction of transistor is always
(A) Forward biased
(B) Reverse biased
(C) None of these
(D) Any
9. . In case of forward biased the resistance of zener diode is
(A) Zero
(B) Low
(C) High
(D) Very high
10. . Photo diode works in……mode
(A) Forward
(B) Saturation
(C) Reverse
(D) A and B both
11. . When intensity of light increases on photo diode then current passes
(A) Very low
(B) Low
(C) Zero
(D) High
12. . The electrical characteristics of solar cells like the voltage, resistance and current will …………………… when exposed to sunlight.
(A) Change
(B) Remain constant
(C) Decrease
(D) None of these