Electronic Principles - Section 1

1.

When the graph of current versus voltage is a straight line, the device is referred to as

A.	Active
B.	Linear
C.	Nonlinear
D.	Bipolar
E.	None of the above

Answer: Option B

Explanation:

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2.

The total inductance of a series inductor circuit is:

A.	equal to the sum of the individual inductance values
B.	equal to the sum of the individual inductive-reactance values
C.	less than the value of the smallest inductor
D.	equal to the source voltage divided by total current
E.	None of the above

Answer: Option A

Explanation:

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3.

Which one of the following statements is true for current flowing in a series circuit?

A.	The amount of current flow through each part of a series circuit can be different, depending on the resistance of each part and the amount of voltage applied to it
B.	The total current in a series circuit is equal to the sum of the currents flowing through the individual components in the circuit
C.	The same current flows through every part of a series circuit
D.	The total current in a series circuit is equal to the total voltage multiplied by the total resistance
E.	None of the above

Answer: Option C

Explanation:

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4.

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

A.	The total current is equal to the sum of the currents for the resistance and capacitance
B.	The current always has the same amplitude and phase for every part of the circuit
C.	The total current is less than the sum of the currents for the resistance and capacitance
D.	The total current. is greater than the sum of the currents for the resistance and capacitance
E.	None of the above

Answer: Option A

Explanation:

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5.

A certain power transformer has a turns ratio of 5. What voltage can you expect at the secondary winding when you apply 120 V to the primary winding?

A.	4.73
B.	0.4 V
C.	24 V
D.	600 V
E.	None of the above

Answer: Option C

Explanation:

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6.

What is the capacitive reactance of a 0.1 micro F capacitor that is operating at 1000 Hz?

A.	less than 1 Ohm
B.	1590 Ohm
C.	312 Ohm
D.	690 Ohm
E.	None of the above

Answer: Option B

Explanation:

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7.

A farad is defined as the amount of capacitance necessary for:

A.	dissipating 1 W of power
B.	causing an ac phase shift greater than 90 degree
C.	storing 1 V for 1 second
D.	changing the voltage on the plates at the rate of 1 V per second when 1 A of current is flowing
E.	None of the above

Answer: Option D

Explanation:

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8.

Doubling the number of turns of wire in an inductor:

A.	reduces the value of inductance by one-half
B.	multiplies the value of inductance by two
C.	multiplies the value of inductance by four
D.	reduces the value of inductance by one-fourth
E.	None of the above

Answer: Option C

Explanation:

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