The collector of a transistor is____________doped?
(A) heavily
(B) moderately
(C) lightly
(D) none of the above
A 10 V power supply would use ____________ as filter capacitor?
(A) paper capacitor
(B) mica capacitor
(C) electrolytic capacitor
(D) air capacitor
In a npn transistor,_____________are the minority carriers?
(A) free electrons
(B) holes
(C) donor ions
(D) acceptor ions
The value of a of a transistor is_____________?
(A) more than 1
(B) less than 1
(C) 1
(D) none of the above
____________ rectifier has the lowest forward resistance?
(A) solid state
(B) vacuum tube
(C) gas tube
(D) none of the above
The maximum efficiency of a half-wave rectifier is _____________?
(A) 40.6 %
(B) 81.2 %
(C) 50 %
(D) 25 %
For the same secondary voltage, the output voltage from a centre-tap rectifier is___________ than that of bridge rectifier?
(A) twice
(B) thrice
(C) four time
(D) one-half