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California Electrician Test Preparation

Quiz Number:  No. 1
Teacher:  Gerald Newton
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No. of Questions= 20

1In Class 1, Division 1 locations, conduit seals shall be placed a maximum of ______inches from an enclosures containing arc producing equipment. 






2What length is required for the pullbox in the diagram below? The box is used with 480 volt conductors that are not spliced.


a)32 inches

b)24 inches

c)48 inches

d)any length

3What is the load that can be used for the service calculation for a dwelling unit when the Range has a nameplate rating of 13 KW?


a)13 kw

b)8.4 kw

c)8 kw

d)none of the above

4What size copper equipment grounding conductor is required for a circuit protected with a 50 ampere circuit breaker?


a)No. 12 copper

b)No. 10 copper

c)No. 8 copper

5What is the highest voltage permitted for a Class 1 power limited circuit?


a)1,000 volts

b)30 volts

c)24 volts

d)None of the above

6What is the missing voltage in the transformer diagram below?


a)120 volts

b)120 volt's

c)1200 volts

d)12,000 volts

7What is the minimum size 10 feet long Rigid Metal conduit required for the following 9 conductors? 4 THWN #12 CU, 2 RHW (covered) #8 CU, 3 RHW (covered) #6 CU


a)1 1/2 inch

b) 2 inch

c) 1 1/4 inch

d)None of the above

8What is the efficiency of a motor which draws 4.5 kilowatts from the line and delivers 5 horsepower?


a)80 percent

b)83 percent

c)90 percent

9Power Factor can be defined as:


a)True Power divided by Apparent Power

b)Apparent Power divided by True Power

c)Apparent Power divided by volts x amperes

10What is the power factor for a three phase system operating when the wattmeter reads 6,000 watts, the voltmeter reads 208 volts, and the ammeter reads 20 amperes?


a).90 or 90 percent

b)1.04 or 104 percent

c).83 or 83 percent

11What is the power factor for a 8000 watt load connected to a 240 volt AC single-phase circuit if the current is 36 amperes?


a).8 or 80 percent

b).93 or 93 percent

c)1.0 or 100 percent

12For the figure below if No. 4 or larger conductors are installed in the raceways dimension X shall be ____inches minimum. The box is used for splices and doeS not have the cubic inch dimensions marked on it.


a)18 inches

b)16 inches

c)24 inches

13For the 4-way Switch, which is the correct hookup?

a)D to T, E to R, F to T, G to S

b)D to S, E to R, F to T, G to W

c)D to R, E to T, F to S, G to W

For a multifamily dwelling supplied by a 3-wire single phase 240 volt system if the feeder neutral load for the lighting and small appliances plus the ranges is calculated to be 390 amperes the demand load is ______ .


a) 390 amperes

b) 333 amperes

c) 350 amperes

d) 300 amperes

15The correct hookup for the 3-way switch below is:


a)A to X, B to Z, C to Y

b)A to Y, B to X, C to Z

c)A to Z, B to Y, C to X

d)A to Z, B to X, C to Y

16Connect the delta wound 480 volt motor leads for the high voltage windings in the diagram below.


a)9-7, 4-6, 8-9, 5-4

b)4-7, 5-8, 6-9

c)4-9, 6-8, 5-7

17Find the minimum size ventilated cable tray for the diagram below.


a)6 inches

b)12 inches

c)18 inches

d)24 inches

18Find the voltage across the 5 ampere load after the neutral is opened. Both loads are resistive and the power factor is 1.0.


a)180 volts

b)120 volts

c)0 volts

19Find the size of inverse time circuit breaker required for the feeder protecting the following polyphase induction motors. These motors are Design B and have a Service Factor of 1.15 and are individually protected with inverse time circuit breakers.


a)150 ampere

b)175 ampere

c)200 ampere

20How many cubic inches is required for the following box? All conductors are No. 14 and there are no internal clamps.


a)12 cubic inches

b)16 cubic inches

c)18 cubic inches

d)20 cubic inches

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© 2008 Gerald Newton