Objective test Diploma in Electronic and telecom engineering for jobs

Objective test Diploma in Electronic and telecom engineering for jobs
Multiple Choice questions for diploma in electronics and communication engineering

1. In FM modulation ,when the modulation index increases, transmitted power is
a) constant
b) increased
c) decreased
d) none of these
Ans:a


2. Video signals in TV are
a) amplitude modulated
b) de modulated
c) frequency modulated
d) none of these

Ans:a


3. Optical detector is
a) diode
b) PIN photo diode
c) transistor
d) none of these

Ans:b


4.Optical fibre has---diameter

a.small
b.large
c.zero
d.none of these

Ans:a




5.An earth station receiver consists of

a.RF to IF down converter
b. IFto RF converter
c.either (a)&(b)
d.none of these

Ans:a

6. An earth station transmitter consists of

a.RF to IF down converter
b. IFto RF converter
c. either (a)&(b)
d.none of these

Ans:b


7.VHF is

a.very low frequency
b.very high frequency
c.very hot frequency
d.none of these
Ans:b


8. TRF is nothing but

a.TV radio frequency
b.Tuned radio frequency
c.Tube radio frequency
d.none of these

Ans:b




9.AFC is nothing but

a.Audio frequency control
b.Automatic frequency control
c.Amplitude frequency control
d.none of these

Ans:b

10.The maximum power in AM,when modulation index is

a.0
b.0.5
c.0.7
d.1


Ans:d