matching-questions electronics-and-communication-engineering question and answers -Page 10

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Matching Questions problems

1. Match the following:

	List I		List II
A.	Detection of a periodic signal in noise	1.	Increase in bandwidth
B.	Recovery of a band limited signal from its uniformly sampled values	2.	Slope overload error
C.	Finer quantization of signal	3.	Nyquist rate
D.	Delta modulation	4.	Cross correlation

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

2. Match the following:

	List I		List II
A.	Mu Metal	1.	very high magnetic permeability
B.	Samrium/cobalt	2.	very high magnetic remanence
C.	Sapphire	3.	very high thermal conductivity
D.	Ferrites	4.	very stable magnetic permeability

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

3. Match the following:

	List I (Types of N-bit ADC)		List II (Characteristics)
A.	Flash converter	1.	Integrating Type
B.	Successive	2.	Fastest converter approximation
C.	Counter ramp	3.	Maximum conversion time = N bits
D.	Dual slow	4.	Used a DAC in its feedback path

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

4. Match the following:

	List I (Binary)		List II (Hexadecimal)
A.	10101010	1.	FF
B.	11111111	2.	88
C.	10001000	3.	92
D.	10010010	4.	AA

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

5.

Electronics and Communication Engineering Matching Questions:

	List I (Theorems)		List II (Property of Network)
A.	h₁₁	1.	1/(r_e + r_d)
B.	h₁₂	2.	r_b + r_e
C.	h₂₁	3.	?_bc
D.	h₂₂	4.	?_cb

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

6. Match the following:

	List I		List II
A.	IF amplifier	1.	Amplifier frequencies in the range of 100 kHz to 5 MHz.
B.	RF amplifier	2.	Current in the output flows only during a portion of the positive half of the input cycle
C.	AF amplifier	3.	Amplifier frequencies in the range of 0 Hz to 5 MHz
D.	Class operation	4.	Amplifier frequencies in the frequency range of 40 Hz to 15 kHz.

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

7. Match the following:

	List I		List II
A.	Television	1.	Either AM or FM used
B.	Radio	2.	Both AM and FM are used
C.	Radar	3.	PCM is used
D.	Data Communication	4.	Digital system

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

8. Match the following:

	List I (Antenna)		List II (Communication system)
A.	Turnstile	1.	Radar
B.	Yagi	2.	TV transmission
C.	Dish	3.	MW broadcasting
D.	Vertical mast	4.	TV reception

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

9. Match the following:

	List I		List II
A.	Darlington amplifier	1.	A circuit using pnp and npn transistors
B.	CB amplifier	2.	A CS amplifier driving a CG amplifier
C.	Cascade amplifier	3.	A circuit with over-all voltage gain close to 1 and very large input impedance
D.	Complementary symmetry amplifier	4.	A circuit with low input impedance

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

10. Match the following:

	List I		List II
A.	JFET	1.
B.	DMOSFET	2.
C.	TRIAC	3.
D.	Enhancement-only channel MOSFET	4.

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

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