NTA UGC NET/JRF Exam, September-2022 (Electronic Science)

71. Match List-I with List-II:

List-I (Communication Mode)	List-II (Features)
(a) Mode 0	I. High speed; 8-bit shift register; one baud rate of $f/12$
(b) Mode 1	II. Standard 8-bit UART; variable baud rate using time 1 overflows
(c) Mode 2	III. Multiprocessor 9-bit UART; variable baud rate using time 1 overflows
(d) Mode 3	IV. Multiprocessor 9-bit UART; two baud rates of $f/32$ and $f/64$

Choose the correct answer from the options given below :

	(a)	(b)	(c)	(d)
A.	I	II	IV	III
B.	I	II	III	IV
C.	IV	III	I	II
D.	II	III	I	IV

Correct Answer: A.

72. Match List-I with List-II:

List-I (Optical Amplifiers)	List-II (Operating band)
(a) PDFFA	I. S-band
(b) TDFA	II. C-band
(c) EDFA	III. L-band
(d) Gain shifted EDFA	IV. O-band

Choose the correct answer from the options given below :

	(a)	(b)	(c)	(d)
A.	IV	III	I	II
B.	IV	II	I	III
C.	IV	I	II	III
D.	II	I	IV	III

Correct Answer: C.

73. Match List-I with List-II:

List-I	List-II
(a) Shannon's theorem	I. Capacity of Gaussian Noise channel
(b) Shannon-Hartley theorem	II. Rate of Information
(c) Baye's theorem	III. Energy of a signal
(d) Parseval's theorem	IV. Conditional probabilities

Choose the correct answer from the options given below :

	(a)	(b)	(c)	(d)
A.	II	I	III	IV
B.	II	I	IV	III
C.	III	II	IV	I
D.	II	III	I	IV

Correct Answer: B.

74. Match List-I with List-II:

List-I (Effect of ξ)	List-II (Condition of System)
(a) $0 < \xi < 1$	I. Over damped
(b) $0 < \xi < 1$ $\xi > 1$	II. Undamped
(c) $0 < \xi < 1$ $\xi = 0$	III. Unstable
(d) $0 < \xi < 1$ $\xi = -1$	IV. Under damped

Choose the correct answer from the options given below :

	(a)	(b)	(c)	(d)
A.	III	I	II	IV
B.	IV	II	I	III
C.	IV	I	III	II
D.	IV	I	II	III

Correct Answer: D.

75. Match List-I with List-II:

List-I (Transducer)	List-II (Application)
(a) Pirani gage	I. Liquid level
(b) Dielectric gage	II. Displacement
(c) Magnetostriction gage	III. Gas flow
(d) Variable capacitance pressure gage	IV. Sound

Choose the correct answer from the options given below :

	(a)	(b)	(c)	(d)
A.	III	IV	I	II
B.	II	I	IV	III
C.	IV	II	I	III
D.	III	I	IV	II

Correct Answer: D.

76. Arrange the following in ascending order of their dielectric constant:

(a) Si₃N₄
(b) Ge
(c) GaAs
(d) SiO₂
Choose the correct answer from the options given below:

A. (a), (b), (d), (c)
B. (b), (c), (a), (d)
C. (c), (d), (b), (a)
D. (d), (a), (c), (b)

Correct Answer: D. (d), (a), (c), (b)

77. Arrange the following in descending order of their switching times:

(a) Schottky diode
(b) Power transistor (Darlington)
(c) IGBT
(d) Triac
Choose the correct answer from the options given below:

A. (c), (d), (b), (a)
B. (b), (c), (d), (a)
C. (c), (b), (d), (a)
D. (d), (b), (c), (a)

Correct Answer: D. (d), (b), (c), (a)

78. Consider the network given in the following figure and arrange the following in their increasing order of numbers:

(a) Total numbers of branches
(b) Total numbers of non-touching loops
(c) Number of independent loops
(d) Number of nodes
Choose the correct answer from the options given below:

A. (b), (c), (d), (a)
B. (b), (c), (a), (d)
C. (c), (b), (a), (d)
D. (c), (b), (d), (a)

Correct Answer: A. (b), (c), (d), (a)

79. The components of class D amplifier are given below. Arrange these in order of their use from input towards output:

(a) Amplifier
(b) Comparator
(c) Sawtooth generator
(d) Low-pass filter
Choose the correct answer from the options given below:

A. (c), (d), (b), (a)
B. (d), (a), (b), (c)
C. (c), (b), (a), (d)
D. (b), (c), (d), (a)

Correct Answer: C. (c), (b), (a), (d)

80. Arrange the following activities to properly run the TYPE-4 Interrupt in 8086 micro processor:

(a) Pushes the CS and IP value on stack for next instruction
(b) Pushes the flag register on the stack
(c) Reset TF and IF
(d) Gets the CS value for start of interrupt service procedure
Choose the correct answer from the options given below: