Are you a student taking up a course on electricity, how to connect it and use it effectively? Are you looking for a way to test out just how much you have understood so far? Then what better way than to take these 3e151: Electrical Safety Hardest Trivia Questions from your coursework? Do give them a try and keep testing yourself!
On the power and disconnect at least one lead from the meter.
Off the power and disconnect at least one lead from the meter.
On the power and disconnect at least one lead from the component.
Off the power and disconnect at least one lead from the component.
R
G
W
Y
R
G
W
Y
Fan relay
Fan speed relay
Evaporator relay
Condenser relay
Compressor, the evaporator, and the outdoor fan.
Indoor fan, the compressor, and the outdoor fan.
Compressor, the indoor fan, and the defrost cycle.
Outdoor fan, the indoor fan, and the auxiliary heat.
Pictorial and line diagrams.
Line and sectional diagrams.
Sectional and pictorial diagrams.
Sectional and enhanced diagrams.
Control voltage.
No control voltage.
Too much control voltage.
Not enough control voltage.
No control voltage.
A burned transformer.
No power to the G terminal.
A wire burned off the compressor.
R wire is broken.
Contacts are broken.
Y wire is broken.
R and Y wires are both broken.
R, G, and W.
R, G, and Y.
V, B, and W.
V, B, and Y.
At the shop.
On your person.
With your crew leader.
With your shop supervisor.
Pulley or belt drive.
Bearings or the shaft.
Pulleys or the shafts.
End bells or ball bearings.
Setscrews.
Snap rings.
Lock pins.
O-rings.
Starting circuit.
Frame mounts.
Motor air system.
Shafts' drive mechanism.
Touch each other.
Expand and contract.
Pull apart from each other.
Create a high amperage draw.
A voltmeter.
An ohmmeter.
An ammeter.
A clamp-on ammeter.
Metal can.
Paper can.
Plastic can.
Bakelite iron can.
Wet type.
Dry type.
Round type.
Square type.
A blown fuse, closed circuit, and grounded circuit.
A closed circuit, short circuit, and a blown fuse.
A grounded circuit, closed circuit, and a short circuit.
An open circuit, short circuit, and grounded circuit.
Will not start.
May run at normal speed.
May run at a lower-than-normal speed.
Will run at a higher-than-normal speed.
Open circuit.
Short circuit.
Grounded circuit.
All of the above.
A defective start capacitor.
A burned motor.
A blown fuse.
A closed circuit.
Incorrect overload switch.
Open disconnect switch.
Incorrect power supply.
Open fuse or breaker.
Product being refrigerated.
Condensing temperature.
Size of the compressor.
Ambient temperature.
8 to 12°F
10 to 14°F
12 to 16°F
16 to 22°F
30°F
45°F
50°F
65°F
Compressor pressure.
Condenser pressure.
Air temperature in the box.
Air temperature at the condenser.
Less capacity because the suction gas gets thinner.
More capacity because the suction gas gets thinner.
Less capacity because the suction gas gets more dense.
More capacity because the suction gas gets more dense.
95°F
105°F
115°F
125°F
25°F
20°F
15°F
10°F
The water flow is sufficient.
There is too much water flow.
There is not enough water flow.
The cooling tower fan just cycled on.
72°F
75°F
78°F
81°F
Low suction pressure and high discharge pressure.
High suction pressure and low discharge pressure.
Low suction pressure and low discharge pressure.
High suction pressure and high discharge pressure.
Low suction pressure and high discharge pressure.
High suction pressure and low discharge pressure.
Low suction pressure and low discharge pressure.
High suction pressure and high discharge pressure.
A dirty coil and a fan running too slow.
A dirty coil and a high suction pressure.
Too much airflow and a high suction pressure.
Too much airflow and a fan running too slow.
Suction pressure will decrease.
Discharge pressure will increase.
Liquid-line temperature will decrease.
Suction line will frost back to the compressor.
An evaporator.
A condenser.
A compressor.
An expansion device.
High suction and low head pressure.
High suction and high head pressure.
Low suction and low head pressure.
Low suction and high head pressure.
A 4-hour standing vacuum test.
An operational test of the system.
Recurring maintenance.
A leak check.
95°F + 15°F = 110°F and 245 psig.
95°F + 20°F = 115°F and 265 psig.
95°F + 25°F = 120°F and 286 psig
95°F + 30°F = 125°F and 301 psig
Defrost is terminated by the time clock.
The unit operates with excessive head pressure.
The unit operates with excessive suction pressure.
Manually initiated defrost is terminated by the temperature sensing device.
Low-pressure motor control.
High-pressure safety switch.
Termination switch.
Oil pressure switch.
Suction line to be warmer than normal.
Suction line to be colder than normal.
Discharge line to be warmer than normal.
Discharge line to be colder than normal.
None, these systems are mandatory.
The system can increase the conductivity of the water.
The system can decrease the conductivity of the water.
None, these systems do not change the conductivity of water and cause no problems.
Mullion heater is defective.
Defrost time clock is defective.
Defrost termination switch is defective.
Evaporator fan motor is defective.
Compressor nameplate only.
Refrigerator nameplate only.
Refrigerator nameplate and draw a diagram of the compressor lines and mounting.
Compressor nameplate and draw a diagram of the compressor lines and mounting.
Hot electrical panel.
Cold electrical panel.
Cold package air conditioner.
Hot package air conditioner.
Refrigerant and allowing it to cool.
High side and allowing the pressures to equalize.
Valves and allowing the pressures to equalize.
Unit and allowing the pressures to equalize.
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The high-side gauge readings.
The low-side gauge readings.
Ultralow pressure gauge readings.
All of the above.
The high-side gauge readings.
The low-side gauge readings.
Ultralow pressure gauge readings.
All of the above.
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