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Transistors – 2 – 1

51. The input resistance of a common amplifier transistor is of the order :

(a) 1 MΩ
(b) 1 kΩ
(c) 0.01 Ω
(d) 0.001 Ω

ANSWER

EXPLANATION

52. The output characteristics curve of a transistor is much more like those of :

(a) A diode
(b) A tetrode
(c) A triode
(d) A pentode

ANSWER

EXPLANATION

53. VMOS transistor exhibits :

(a) Negative thermal coefficient
(b) Positive thermal coefficient
(c) Zero thermal coefficient
(d) None of the above

ANSWER

EXPLANATION

54. VMOS transistor can shut off amperes of current in :

(a) Few milli seconds
(b) Few seconds
(c) Few microseconds
(d) Tens of nanoseconds

ANSWER

EXPLANATION

55. The merits of VMOS transistors as compared to bipolar transistor is/are :

(a) No extra changes are stored while in induction
(b) Cannot go into thermal run away
(c) Exhibits negative temperature coefficient
(d) All of the above

ANSWER

EXPLANATION

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