Electronic Principles – Section 1

46. 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

Correct Answer:  C. 24 V

47. 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

Correct Answer:  A. The total current is equal to the sum of the currents for the resistance and capacitance

48. 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

Correct Answer:  C. The same current flows through every part of a series circuit

49. 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

Correct Answer:  A. equal to the sum of the individual inductance values

50. 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

Correct Answer:  B. Linear

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