Exercise: Exam Question Papers

Questions for: Exam Question Papers

If the function A, B are A = R + PQ + RS B = PQRS + PQRS + PQRS
Which of the following is true?
A:
A = B
B:
A = B
C:
no direct relation between A and B
D:
insufficient data
Answer: B

A = R + PQ + RS

B = PQ R S + P Q R S + PQ R S

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In the circuit shown below current through the resistor is shown. Voltage across 4 Ω resistor is:
A:
8 volt
B:
≈ 5.87 V
C:
≈ 6.87 V
D:
None of these
Answer: B

Voltage across 5 Ω = 10 V

Thus voltage across 7 Ω = 10 V (5 Ω || 7 Ω)

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The following circuit represents :
A:
A(B + CD) BC
B:
C:
AB + BC + ACD
D:
none of these
Answer: A

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A 'n' bit sequence generator employing SR flip-flop has maximum length of the sequence as :
A:
2n
B:
n
C:
2n - 1
D:
2n-1
Answer: C

Since for SR flip-flop all zero state is lock-in state; from which SR can not get out, the maximum length of sequence with 'n' bits will be 2n - 1.

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The ratio of condition current density to displacement current density for a good conductor and a good dielectric is respectively __________ .
A:
greater than 1, greater than 1
B:
greater than 1, less than 1
C:
less than 1, less than 1
D:
Answer: B

= 1 can be considered as the dividing line between the conductor and dielectrics for a good conductor >> 1 and for good dielectrics << 1 at any frequency ω.

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