Consider the system with and where p and q are arbitrary real numbers. Which of

CuriousTab

CuriousTab

Home Aptitude

Discussion

Home ‣ Electronics and Communication Engineering ‣ Exam Questions Papers See What Others Are Saying!

Question
Consider the system with and where p and q are arbitrary real numbers. Which of the following statements about the controllability of the system is true?
Options
A. The system is completely state controllable for any non zero values p and q
B. Only p = 0 and q = 0 result in controllability
C. The system is uncontrollable for all values of p and q
D. We cannot conclude about controllability from the given data

Correct Answer

The system is uncontrollable for all values of p and q

Explanation

Use the condition of controllability.

More questions

1. An RC snubber circuit is used to protect a thyristor against :
Options
A. false triggering
B. failure to turn on
C. switching transients
D. failure to commutate

2. The displacement flux density at a point on the surface of a perfect conductor is = 2(a_x - 3 a_z)c/m² pointing away from the surface. The charge density at that point c/m² will be
Options
A. 2
B. - 2
C. 4
D. - 4

3. To increase Q factor of a coil, the wire should be
Options
A. long
B. thin
C. thick
D. long and thin

4. Match the following:

	List I (DOS commands)		List II (Meaning)
A.	ATTRIB	1.	Displays all directories and subdirectories
B.	SCAN DISK	2.	Moves files to another director
C.	MOVE	3.	Checks the status of disc
D.	TREE	4.	Hides a file

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

5. Match the following:

	List I		List II
A.	SSB Modulation	1.	Transmission line
B.	? . B = 0	2.	Hilbert transform
C.	Model dispersion	3.	Faraday's law
		4.	Absence of magnetic monopoles
		5.	Waveguides
		6.	Phase locked loop

Options
A. A-1, B-3, C-5
B. A-5, B-4, C-2
C. A-6, B-4, C-5
D. A-2, B-4, C-5

6. 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

7. Match the following:

	List I (Command in WORD)		List II (Meaning)
A.	END	1.	The bar displays the current position of cursor
B.	HOME	2.	Moves cursor to the beginning of current line
C.	Status	3.	Moves cursor to end of document

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

8. Match the following:

	List I		List II
A.	Penetration frequency	1.	Lowest frequency at which charged particles spiral in fixed magnetic field
B.	Optimum working frequency	2.	Same as critical and frequency
C.	Gyro frequency	3.	Highest frequency of radio waves that can be used
D.	Maximum usable frequency	4.	The most effective frequency for ionosphere propagation of radio waves

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

9. Match the following:

	List I		List II
A.	Output of signal generator	1.	Modulated
B.	Error signal from a synchro	2.	Digital
C.	Output of a JK flip flop	3.	Analog
D.	Signal received by radar	4.	Stoichastic

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

10. Match the following:

	List I		List II
A.	TV	1.	1 kHz
B.	Radio	2.	3 kHz
C.	Telephony	3.	9 kHz
D.	Telegraphy	4.	5 MHz

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

Comments

There are no comments.

More in Electronics and Communication Engineering: