Electronic Principles – Section 4

11. The basic unit of measurement for resistance is the:

A. volt
B. ampere
C. ohm
D. watt
E. None of the above

Correct Answer:  C. ohm

12. What is the phase shift between total current and voltage, if 100 ohm resistor connected in parallel with an inductor that has a reactance of 200W?

A. 0 degree
B. 26.6 degree
C. 90 degree
D. 180 degree
E. None of the above

Correct Answer:  B. 26.6 degree

13. When operating below its resonant frequency, a series RLC circuit has the characteristics of a:

A. series RL circuit
B. series RC circuit
C. series RLC circuit operated above its resonant frequency
D. purely resistive circuit
E. None of the above

Correct Answer:  B. series RC circuit

14. The valence electron of a copper atom experiences what kind of attraction toward the nucleus?

A. Strong
B. Neutral
C. Weak
D. Impossible to say
E. None of the above

Correct Answer:  C. Weak

15. Suppose a step-down transformer has a turns ratio of 5:1. If the secondary current is 1A RMS, what is the primary current?

A. 0.3 A
B. 0.2 A
C. 0.4 A
D. 0.6 A
E. None of the above

Correct Answer:  B. 0.2 A

Leave A Comment?

four + 20 =