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Electronics Information Test 1

ELECTRONICS INFORMATION TEST 1

80 QUESTIONS
60 MINUTES

This is a test of your knowledge of electrical, radio, and electronics
information. You are to select the correct response from the choices
given. Then mark the space on your answer sheet that has the same
number and letter as your choice.

1. The core of an electromagnet is usually 6. The device that is often used to change the voltage in
(A) aluminium alternating current circuits is the
(B) brass (A) contactor
(C) lead (B) converter
(D) iron (C) rectifier
(D) transformer
2. An electrician should consider all electrical equipment
“alive” unless he or she definitely knows otherwise. 7. Electrical contacts are opened or closed when the
The main reason for this practice is to avoid electrical current energizes the coils of a device
(A) doing unnecessary work called a
(B) energizing the wrong circuit (A) reactor
(C) personal injury (B) transtat
(D) de-energizing a live circuit (C) relay
(D) thermostat
3. If voltage is represented by V, current by l, and
resistance by R, then the one of the following that 8. To determine directly whether finished wire
correctly states Ohm’s Law is installations posses resistance between conductors
(A) R = V ´ I and ground, use
I (A) clamps
(B) R =
V (B) set screws
(C) V = I ´ R (C) shields
I (D) a megger
(D) V =
R
4. The device used to change AC to DC is a 2
(A) frequency changer
(B) transformer
(C) regulator 5 240 VOLTS
(D) rectifier
1 3
4

9. The five lamps shown above are each rated at 120
volts, 60 watts. If all are good lamps, lamp 5 will be
(A) much brighter than normal
5. The reading of the kilowatt-hour meter above (B) about its normal brightness
(A) 9672 (C) much dimmer than normal
(B) 1779 (D) completely dark.
(C) 2770
(D) 0762

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