IES EC Government Jobs Exams

Q. Multiplexing is possible if signals are sampled. Two signals have bandwidths A = 0 to 4 kHz and B = 0 to 8 kHz respectively. The sampling frequency chosen is 12 kHz. Which one of the following is correct? This choice of the sampling frequency a. is correct since A and B have an integral relationship of 2 b. will not lead to aliasing c. does not obey sampling theorem d. can never lead to multiplexing.

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IES EC Other Question
Q. A magnetic drum of 8 inch diameter has 100 tracks and storage density of 200 bits/inch. What is its storage capacity?

Option
a) 8402 bits
b) 202400 bits
c) 502400 bits
d) 1004800 bits Q. A feedback amplifier has an open loop gain of -100. If 4% of the output is fed back in a degenerative loop, what is the closed loop gain of the amplifier?

Option
a) 33.3
b) 25
c) 20
d) 25