Consider the following statements about hybrid ring Ports 1 and 2 are decoupled.

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Question
Consider the following statements about hybrid ring
1. Ports 1 and 2 are decoupled.
2. Port 3 and 4 are coupled.
3. A signal entering either port 1 or 2 splits equally between ports 3 and 4.
4. A signal entering either port 3 or 4 splits equally between ports 1 and 2.
Which of the above are correct?
Options
A. 1, 2, 3 and 4
B. 1, 3 and 4
C. 1 and 2
D. 2, 3 and 4

Correct Answer

1, 3 and 4

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1. In a klystron amplifier the transit time of electron passing the gap in the cavity should be
Options
A. less than one cycle
B. less than half cycle
C. less than quarter cycle
D. more than quarter cycle

6. Match the following:

List I List II

A. e^-t ? (t) 1.

B. 2. j? X(?)

C. 3.

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

7. Match the following:

	List I		List II
A.	(? x E)ds = 0	1.	Continuity equation
B.	rv.dv = Q	2.	Ampere's law
C.	(J + D)ds	3.	Gauss law
D.	-r_vdv	4.	Faraday's law
E.	H.dl = (? x H)ds	5.	Stoke's theorem

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

8. Match the following:

	List I		List II
A.		1.	Negative limiter
B.		2.	Positive Limiter
C.		3.	Biased negative Limiter
D.		4.	Biased positive limiter

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

9. Match the following:

	List I		List II
A.	Anderson Bridge	1.	Low resistance
B.	Kelvin Bridge	2.	Medium resistance
C.	Schering Bridge	3.	Inductance
D.	Wheatstone Bridge	4.	Capacitance

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

10. Match the following:

	List I		List II
A.	Evanescent wave	1.	Pattern multiplication
B.	Skip distance	2.	Mismatched transmission line
C.	Return loss	3.	Propagation in lossy medium
D.	Antenna array	4.	Short wave propagation
		5.	Propagation below cut-off

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

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