120. For proper operation of the transistor,its collector should have
A. proper forward bias
B. proper reverse bias
C. very small size
D. none of the above
121. For faithful amplification by a transistor circuit, the value of VcE should for silicon transistor.
A. not fall below 1 V
B. be zero
C. be 0.2 V
D. none of the above
122. The circuit that provides the best stabilisation of operating point is
A. base resistor bias
B. collector feedback bias
C. potential divider bias
D. none of the above
123. The point of intersection of d.c. and a.c. load lines represents
A. operating point
B. current gain
C. voltage gain
D. none of the above
124. An ideal value of stability factor is
A.100
B.200
C. more than 200
D.1
125. The zero signal lc is generally mA in the initial stages of a transistor amplifier.
A.4
B.1
C.3
D. more than 10
126. If the maximum collector current due to signal alone is 3 mA, then zero signal collector current should be atleast equal to
A. 6 mA
B. 1.5 mA
C. 3 mA
D. 1 inA
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