Transistors » Exercise – 2
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 Omega;
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
53. VMOS transistor exhibits :
(a) Negative thermal coefficient
(b) Positive thermal coefficient
(c) Zero thermal coefficient
(d) None of the above
54. VMOS transistor can shut off amperes of current in :
(a) Few milli seconds
(b) Few seconds
(c) Few microseconds
(d) Tens of nanoseconds
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
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