Top 150+ Solved Communication Skill MCQ Questions Answer

a. fsk

b. two tone modulation

c. pcm

d. single tone modulation

a. 70 khz

b. 75 khz

c. 80 khz

d. 65 khz

a. the reflected colour

b. the wavelength transmitted through it

c. reflected colour for opaque object and wavelength transmitted through it for transparent objects

d. none of the above

a. large bandwidth is required

b. quantising noise can be overcome by companding

c. quantising noise can be reduced by decreasing the number of standard levels

d. suffers from the disadvantage of its incompatibly with tdm

a. convex lens has positive focal power and concave lens have negative focal power

b. convex lens has negative focal power and concave lens have positive focal power

c. all lens have positive focal power

d. all lens have negative focal power

a. resultant wave

b. speech voltage to be transmitted

c. voltage with constant frequency, phase or amplitude

d. voltage for which frequency, phase or amplitude is varied

a. use a longer transmission line

b. connect a booster

c. change the antenna orientation of location

d. twist the transmission line

a. low frequency

b. medium frequency

c. high frequency

d. very high frequency

a. stepped index operation

b. impurities

c. microbending

d. attenuation in glass

a. linear devices

b. harmonic devices

c. class c amplifiers

d. non-linear devices

a. 1 khz

b. 3 khz

c. 10 khz

d. 50 khz

a. costly

b. cheaper

c. almost equally costly

d. none of the above

a. 200 and 1.01

b. 200 and 10.01

c. 200 and 100.1

d. 200 and 200

a. 5

b. 4.9

c. 995

d. 10

a. pcm

b. pwm

c. delta modulation

d. differential pcm