Free C-46 Practice Quiz: Take our 2019 exam, see where you stand! - California.USTradeTest.com

In order to find out whether a wire is energized, what device should be used?

Ammeter

Megger

Ohmmeter

Volt-ohm meter

Correct! Wrong!

If a hot tub is 5’ in diameter and filled to a point 3” below the top of its 4’ side, what is the approximate volume of water to be solar heated?

551 gallons.

589 gallons.

1,208 gallons.

1,355 gallons.

Correct! Wrong!

Which of the following valves would open to relieve internal pressure in a vessel?

Check valve.

Stop valve.

Pressure reducing valve.

T & P valve.

Correct! Wrong!

As the temperature of a PV module increases, what will happen to the voltage?

It depends on the module design.

The voltage will be unaffected.

The voltage will decrease.

The voltage will increase.

Correct! Wrong!

If a swimming pool is 20’ by 30’ and filled to a depth of 8’, what is the volume of water to be solar heated?

600 cubic yards.

4,800 cubic yards.

33,600 gallons.

35,904 gallons

Correct! Wrong!

In a collector, the surface that retains the solar radiation and converts it to heat energy is called the __________.

Absorbe.

Exchanger.

Thermal plate.

Radiator.

Correct! Wrong!

If the maximum ac output rating of an inverter with 120-V ac output is 1500 W, the rating of the circuit breaker at the point-of-utility connection should be .

15 A

20 A

25 A

30 A

Correct! Wrong!

What is the resistance of the circuit with 110 volts and 22 amps?

2 ohms

5 ohms

24 ohms

28 ohms

Correct! Wrong!

When mounting solar collectors on the ground you should __________.

Face collectors true west.

Fix collectors at a 30° tilt.

Place collectors on a concrete pad.

Protect collectors from wind.

Correct! Wrong!

Which of the following devices does the NEC require to be a part of PV systems mounted on residential dwellings?

A ground-fault protection device.

A stand-off mount for the PV modules.

A utility interconnection.

An accessible source circuit combiner box.

Correct! Wrong!

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In order to find out whether a wire is energized, what device should be used?

If a hot tub is 5’ in diameter and filled to a point 3” below the top of its 4’ side, what is the approximate volume of water to be solar heated?

Which of the following valves would open to relieve internal pressure in a vessel?

As the temperature of a PV module increases, what will happen to the voltage?

If a swimming pool is 20’ by 30’ and filled to a depth of 8’, what is the volume of water to be solar heated?

In a collector, the surface that retains the solar radiation and converts it to heat energy is called the __________.

If the maximum ac output rating of an inverter with 120-V ac output is 1500 W, the rating of the circuit breaker at the point-of-utility connection should be . ​

What is the resistance of the circuit with 110 volts and 22 amps?

When mounting solar collectors on the ground you should __________.

Which of the following devices does the NEC require to be a part of PV systems mounted on residential dwellings?

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If the maximum ac output rating of an inverter with 120-V ac output is 1500 W, the rating of the circuit breaker at the point-of-utility connection should be .