⚡Electrical Engineering MCQs
Electrical Engineering MCQs
499 MCQs301
The d.c. load of a transistor amplifier is generally_______________ that of a a.c. load?
AThe same as
BLess than
CMore than
DNone of the above
302
If the input capacitor of a transistor amplifier is short-circuited, then_________________?
ATransistor will be destroyed
BBiasing conditions will change
CSignal will not reach the base
DNone of the above
303
A CE amplifier is also called _______________ circuit?
AGrounded emitter
BGrounded base
CGrounded collector
DNone of the above
304
If a transistor amplifier feeds a load of low resistance (e.g. speaker), then voltage gain will be_______________?
AHigh
BVery high
CModerate
DLow
305
The radio wave picked up by the receiving antenna is amplified about _________________ times to have reasonable sound output?
A1000
BA million
C100
D10000
306
The ratio of output impedance of a CE amplifier is _______________?
AAbout 1
BLow
CHigh
DModerate
307
The purpose of a coupling capacitor in a transistor amplifier is to ___________________?
Ac. and block
BProtect the transistor
CPass
DProvide biasing
308
An amplifier has a power gain of 100. Its db gain is ________________?
A10 db
B20 db
C40 db
DNone of the above
309
In order to get more voltage gain from a transistor amplifier, the transistor used should have_________________?
AThin base
BThin collector
CWide emitter
DNone of the above
310
In the d.c. equivalent circuit of a transistor amplifier, the capacitors are considered__________________?
AShort
BOpen
CPartially short
DNone of the above