Computer Science - Electronic Principles

1. 

1 Microfarad is the same as:

A. 1 millionth of a picofarad
B. 1000 millifarads
C. 1 million picofarads
D. 1 million farads
E. None of the above

Answer: Option C

Explanation:

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2. 

Which one of the following statements is true for resistance in a parallel circuit?

A. The total resistance is equal to the sum of the individual resistances in a parallel circuit.
B. The total resistance of a parallel circuit is always less than the value of the smallest resistance
C. The total resistance of a parallel circuit is equal to the total voltage
D. The total resistance in a parallel circuit is equal to the average value of the individual resistances
E. None of the above

Answer: Option B

Explanation:

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3. 

The direction of conventional current flow is:

A. from negative to positive
B. from positive to negative
C. from left to right
D. from neutral to positive
E. None of the above

Answer: Option B

Explanation:

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4. 

Doubling the operating frequency of a purely inductive circuit:

A. doubles the amount of current through the inductors
B. has no effect on the current through the inductors
C. cuts the current through the inductors one-half
D. increases the current, but by an amount that can be determined only by doing a complete analysis of the circuit
E. None of the above

Answer: Option C

Explanation:

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5. 

The secondary voltage for a certain power transformer is twice the voltage applied to the primary. The current flowing in the secondary winding will be:

A. One-half the primary current
B. Same as the primary current
C. Twice the primary current
D. No more than 10% less than the primary current
E. None of the above

Answer: Option A

Explanation:

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