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Question

Match the following:

List I List II

A. Output of signal generator 1. Modulated

B. Error signal from a synchro 2. Digital

C. Output of a JK flip flop 3. Analog

D. Signal received by radar 4. Stoichastic

Options
A. A-1, B-3, C-2, D-4
B. A-3, B-1, C-2, D-4
C. A-3, B-1, C-4, D-2
D. A-1, B-3, C-4, D-2

Correct Answer

A-3, B-1, C-2, D-4

More questions

1. In a two phase ac servomotor rotor resistance is R and rotor reactance is X. The speed curve will be linear if
Options
A.
B.
C.
D. X² = R

3. Regarding TASI which one of the following statements is wrong?
Options
A. It snatches the channel in his speech and may allocate it to another speaker needing it.
B. The same speaker is reassigned a channel almost instantly when he speaks again even when the circuit is heavily loaded.
C. It increases the overall utilization of the transmission channel
D. Intercontinental callers sometimes confuse the effects of TASI with the effects of satellite delay.

4. In a single phase full wave converter (M - 2 connection) feeding a highly inductive load, the firing angle for each thyristor is a in the respective half cycle. The period of conduction of each thyristor is
Options
A. p - a
B. p
C. p + a
D. p - 2a

5. Consider the systems with following open loop transfer functions
If unity feedback is used, the increasing order of time taken for unit step response to settle is
Options
A. 1, 2, 3
B. 3, 1, 2
C. 2, 3, 1
D. 3, 2, 1

6. A satellite link uses different frequencies for receiving and transmitting in order to
Options
A. avoid interference from terrestrial microwave links
B. avoid interference between its powerful transmitted signal and weak in coming signal
C. minimise free-space losses
D. maximise antenna gain

7. A thyristor has a turn on time of 6 ?s. If the anode circuit is inductive, the turn on time will be
Options
A. 6 ?s
B. less than 6?s
C. more than 6 ?s
D. either 6 ?s or less

8. In a ballistic galvanometer, a charge of 100 ?C gives a first swing of 25�. The charge required to cause first swing of 50� is
Options
A. 200 ?C
B. 400 ?C
C. 50 ?C
D. 25 ?C

9. If reference sound pressure P₀ is 2 x 10^-5 N/m², a sound pressure of 90 dB is equal to
Options
A. 0.632 N/m²
B. 0.707 N/m²
C. 0.835 N/m²
D. 0.925 N/m²

10. The conductivity of intrinsic semiconductor is given by
Options
A. en_i(?_p - ?_n)
B. en_i(?_p + ?_n)
C. n_i(?_p + ?_n)
D. n_i(?_p?_n)

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