Electronics and Communication Engineering - Networks Analysis and Synthesis

1. 

In the circuit shown in the given figure, switch k is closed at t = 0. The circuit was initially relaxed then which one of the following sources of v(t) will produce maximum current at t = 0+?

A. Unit step
B. Unit impulse
C. Unit ramp
D. Unit step plus unit ramp

Answer: Option B

Explanation:

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2. 

Pick the correct statement

A. Delta connection draws same current as star connection
B. Delta connection draws 3 times as much current as star connection
C. Delta connection draws of the current of star connection
D. Delta connection draws of the current of delta connection

Answer: Option D

Explanation:

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3. 

The inverse Fourier transform of is

A. sin ωt
B. cos ωt
C. sgn (t)
D. u (t)

Answer: Option C

Explanation:

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4. 

The colour on the extreme left in general purpose fixed resistors represents

A. first significant digit
B. tolerance
C. wattage rating
D. voltage rating

Answer: Option A

Explanation:

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5. 

When a current flows through a conductor,

A. an electric field exists at all points within the conductor
B. electric field exists only at all points on the surface of the conductor
C. electric field exists only at ends of the conductor
D. any of the above depending on magnitude of current

Answer: Option A

Explanation:

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