A 3 port circulator is in the given figure. Its scattering matrix is

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Question
A 3 port circulator is in the given figure. Its scattering matrix is
Options
A.
B.
C.
D.

Correct Answer

More questions

1. In envelope detection of an AM waveform
Options
A. One side band and full-ampiitude carrier are needed
B. Both side bands and full-amplitude carrier are needed
C. Only two side bands are needed
D. Upper side band and part of carrier are needed

2. Which of the following statement regarding link loss for a satellite is wrong?
Options
A. For fixed antenna, it is inversely proportional to f²
B. For fixed frequency, it is inversely proportional to the product of the antenna aperture areas
C. For a given satellite operating at a given frequency, it is inversely proportional to
D. Loss in down-link is negligible as compared to that in uplink

3. Assertion (A): The steady state response, of a stable, linear, time invariant system, to sinusoidal input depends on initial conditions.
Reason (R): Frequency response, in steady state, is obtained by replacing s in the transfer function by j?
Options
A. Both A and R are correct and R is correct explanation of A
B. Both A and R are correct but R is not correct explanation of A
C. A is correct but R is wrong
D. R is correct but A is wrong

4. Assertion (A): Artificial transmission lines are frequently used in laboratories.
Reason (R): An artificial transmission line can be used to represent an actual line and can also be used as a delay circuit, as attenuator, as filter network etc.
Options
A. Both A and R are correct and R is correct explanation of A
B. Both A and R are correct but R is not correct explanation of A
C. A is correct but R is wrong
D. A is wrong but R is correct

5. Match the following:

	List I		List II
A.	TTL	1.	Low propagation delay
B.	ECL	2.	Low power consumption
C.	MOS	3.	High packing density
D.	CMOS	4.	Saturated bipolar logic

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

6. Match the following:

	List I (Memories)		List II (Characteristic)
A.	Static PLA	1.	erasable, programmable
B.	CCD	2.	ultra high speed
C.	ECL	3.	stores large volume of data
D.	GAL	4.	Does not need refreshing
		5.	Non-volatile

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

7. The effect of source inductance in a 3 phase fully controlled bridge converter is to
Options
A. decrease the output voltage
B. increase the output voltage
C. decrease the output voltage and increase the output current
D. increase the output voltage and decrease the output current

8. Assertion (A): The reverse saturation current in a semiconductor diode is 4nA at 20�C and 32 nA at 50�C.
Reason (R): The reverse saturation current in a semiconductor diode doubles for every 10�C rise in temperature.
Options
A. Both A and R are true and R is correct explanation of A
B. Both A and R are true but R is not a correct explanation of A
C. A is true but R is false
D. A is false but R is true

9. Match the following:

	List I (Diode Rectifier)		List II (Expression for output voltage)
A.	Bridge	1.
B.	Half wave	2.
C.	Full wave using centre tapped transformer	3.

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

10. Match the following:

	List I		List II
A.	n Channel JFET	1.
B.	p Channel JFET	2.
C.	Depletion MOSFET	3.
D.	Enhancement MOSFET	4.

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

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