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Electrical/Instrumentation Grade 2
Sample Test Questions

For each question, choose the single most correct answer.

<<click here for answer key>>
<<Click here for Math Formulas and Conversion Factors>>

Question #1
When a 100 watt, 120 volt lamp burns constantly for 8 hours at rated voltage, the energy used is:

a) 800 watt hours.
b) 960 watt hours.
c) 12,000 watt hours.
d) 96,000 watt hours.

Question #2
If two 4.8 ohm resistors are connected in parallel, the resulting resistance will be:

a) 3 ohms.
b) 2.4 ohms.
c) 1.2 ohms.
d) 0.6 ohms.

Question #3
In any typical motor control scheme the device which is first in the circuit is the:

a) starter coil
b) indication lamp
c) fuse
d) lock-out stop button

Question #4
When entering a confined space, what must be tested?

a) Moisture level
b) Noise level
c) UV level
d) Oxygen and LEL levels

Question #5
A tank 40 feet in diameter and 20 feet high is filled to 18 feet with oil that has a specific gravity of 0.91. What is the gauge pressure at the bottom of the tank in PSI?

a) 7.09
b) 7.79
c) 7.88
d) 8.56

Question #6
Five lights are connected in parallel and fed by a six volt 100 amp hour battery, each light is a sixty watt lamp. How long could this battery keep these lamps lit?

a) 1.0 hr.
b) 1.5 hr.
c) 2.0 hr.
d) 0.25 hr.

Question #7
A ground connection should be made:

a) before the current carrying wire is connected.
b) after the current carrying wire is connected.
c) only if power may be accidentally interrupted.
d) only when an extension cord is used.

Question #8
If a #12 wire will safely carry 20 amps at 120 volts, what will it carry at 240 volts?

a) 10 amps
b) 20 amps
c) 15 amps
d) 30 amps

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