A semiconductor has generally_______________valence electrons?
A semiconductor has generally_______________valence electrons?
A. 2
B. 3
C. 6
D. 4
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Class C amplifiers are used as ___________________?
Class C amplifiers are used as ___________________?A. AF amplifiers
B. Detectors
A. amplifiers
C. None of the aboveThe d.c. load of a transistor amplifier is generally_______________ that of a a.c. load?
The d.c. load of a transistor amplifier is generally_______________ that of a a.c. load?A. The same as
B. Less than
C. More than
D. None of the aboveThe disadvantage of base resistor method of transistor biasing is that it_________________?
The disadvantage of base resistor method of transistor biasing is that it_________________?A. Is complicated
B. Is sensitive to changes in ß
C. Provides high stability
D. None of the aboveWhich of the following alternatives will be cheaper ?
Which of the following alternatives will be cheaper ?A. A 100 H.P. AC. three phase motor
B. Four motors of 25 H.P. each
C. Five motors of 20 H.P. each
D. Ten motors of 10 H.P. eachThe alternating current has frequency of 106 Hz in such a way that time period for completion of cycle is_______________?
The alternating current has frequency of 106 Hz in such a way that time period for completion of cycle is_______________?A. 1Hzs
B. 1.5Hzs
C. 106sec
D. 1secFor good stabilsation in voltage divider bias, the current I1 flowing through R1 and R2 should be equal to or greater than_____________?
For good stabilsation in voltage divider bias, the current I1 flowing through R1 and R2 should be equal to or greater than_____________?A. 10 IB
B. 3 IB
C. 2 IB
D. 4 IB