# Electronics and Communication Engineering - Matching Questions

### Exercise :: Matching Questions - Section 3

46.

Match the following:

List I List II
A.Ratio of maximum energy stored to energy dissipated per cycle1.Propagation constant
B.TEM mode is loss less medium2.Cutoff frequency is zero
C.Ratio of frequency in radian to phase velocity of EM wave3.Quality factor of cavity
D.TEM is the mode of lowest cutoff frequency4.Cylindrical waveguide

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

Explanation:

No answer description available for this question. Let us discuss.

47.

Match the following:

List I List II
A.Flash converter ADC1.requires conversion time of a few μs
B.Dual slope ADC2.requires DAC
C.Successive approximation ADC3.minimizes the effect of power supply interference
4.requires complex hardware
5.is a tracking ADC

 A. A-2, B-3, C-4 B. A-4, B-3, C-2 C. A-5, B-4, C-3 D. A-1, B-2, C-5

Explanation:

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48.

Match the following:

List I (Bits operator in C) List II (Meaning)
A.˜1.Bitwise XOR
B.&2.Bitwise AND
C.|3.Bitwise OR
D.U4.One's complement

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

Explanation:

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49.

Match the following:

List I List II
A.Line commutation1.
B.Resonant commutation2.
C.Complementary commutation3.
D.Self commutation4.

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

Explanation:

No answer description available for this question. Let us discuss.

50.

Match the following:

List I (Bit Pattern) List II (Register pairs)
A.001.SP
B.012.B-C
C.103.D-E
D.114.H-L

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