Electronics and Communication Engineering - Exam Questions Papers

6. 

If the potential functions V1 and V2 satisfy Laplace's equation within a closed region and assume the same values on its surface, then which of the following is correct?

A. V1 and V2 are identical
B. V1 is inversely proportional to V2
C. V1 has the same direction as V2
D. V1 has the same magnitude as V2 but has different direction

Answer: Option A

Explanation:

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7. 

Which of the following is NOT associated with a p-n junction?

A. Junction capacitance
B. Charge Storage Capacitance
C. Depletion Capacitance
D. Channel Length Modulation

Answer: Option D

Explanation:

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8. 

Epitaxial growth is used in ICs

A. because it produces low parasitic capacitance
B. because it yields back to back isolating pn junction
C. to grow single crystal n doped silicon on a single crystal p type substrate
D. to grow selectively single crystal p doped silicon of one resistivity on a p type substrate of a different resistivity

Answer: Option D

Explanation:

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9. 

When a particular mode is existed in a waveguide, there appears an extra electric component, in the direction of propagation. In what mode is the wave propagating?

A. Transverse electric
B. Transverse magnetic
C. Transverse electromagnetic
D. Longitudinal

Answer: Option B

Explanation:

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10. 

Which of the following algorithms design techniques is used in quick sort algorithm?

A. Dynamic programming
B. Backtracking
C. Divide and conquer
D. Greedy

Answer: Option C

Explanation:

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