TRANSISTORS

The collector of a transistor is____________doped? A. heavilyB. moderately C. lightly D. none of the above

In a npn transistor,_____________are the minority carriers? A. free electronsB. holes C. donor ions D. acceptor ions

The input impedance of a transistor is___________? A. highB. low C. very high D. almost zero

The value of a of a transistor is_____________? A. more than 1B. less than 1 C. 1 D. none of the above

In a tansistor, IC = 100 mA and IE = 100.2 mA. The value of ß is____________? A. 100 B. 50 C. about 1D. 200

The relation between ß and a is______________? A. ß = 1 / (1 – a ) B. ß = (1 – a ) / aC. ß = a / (1 – a ) D. ß = a / (1 + a )

The phase difference between the input and output voltages in a common base arrangement is___________? A. 180o B. 90o C. 270oD. 0o

The leakage current in CE arrangement is____________that in CB arrangement? A. more than B. less than C. the same as D. none of the above

If the value of a is 0.9, then value of ß is___________? A. 9 B. 0.9 C. 900D. 90

BC 147 transistor indicates that it is made of____________? A. germaniumB. silicon C. carbon D. none of the above