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California Electrician Test Preparation


Quiz Number:  No. 4
Teacher:  Gerald newton
Teacher's Home Page:  http://www.electrician2.com
Teacher's Email:  electrician@electrician2.com

No. of Questions= 20


1 Refer to the figure below. What is wrong with the grounding rod installation illustrated below (Assume the rod could not be driven because of a a rock bottom)?
            
a)
It is not 10 feet long.
b)
The ground rod shall be 5/8 inches in diameter
c)
It is not 30 inches deep
d)
There is nothing wrong, according to the Code
2 Which of the following is not a standard fuse or inverse time circuit breaker size?
            
a)
35
b)
45
c)
50
d)
55
3 In general, a continuous duty motor rated at more than 1 horsepower shall be protected by a separate overload device rated at no more than ______ percent of the motor nameplate full-load current rating.
            
a)
75
b)
100
c)
115
d)
125
4 Where direct buried conductors or cables emerge from the ground they shall be protected by enclosures or raceways. In no case shall the protection be required to exceed ______ inches below finished grade.
            
a)
12
b)
18
c)
24
d)
30
5 Given: Three resistors (R1, R2, and R3) are installed in a series circuit. The power used by R1 is 100 watts and the power used by R2 is 75 watts. The total power used by the circuit is 225 watts. Then the power used by resistor R3 is _____ watts.
            
a)
24
b)
50
c)
75
d)
175
6 Refer to the figure below. The total resistance Rt is ______ ohms. Select the closest answer.
            
a)
9.4
b)
10.5
c)
15
d)
40
7 Given: A free standing electric range is rated 120/240 volts and requires a neutral connection for the 120 volt timer and lights. The range is equipped with 3 wire cord with No. 8 copper conductors and a 3 prone plug for two hot leads and neutral. The range frame shall be permitted to be _______.
            
a)
grounded by running a ground from the range frame to the outlet box, wrapping the ground around the cord and then grounding it to the outlet box.
b)
ungrounded
c)
grounded by a 4-wire cord containing the two hot leads, the neutral, and a green grounding conductor. (the range requires a 4-wire cord)
d)
grounded at the range by bonding the grounded conductor to the range frame.
8 In dwelling units a multi-wire branch circuit supplying more than one device on the same yoke shall be protected by _______.
            
a)
two (2) single pole circuit breakers, operating independently
b)
two (2) single pole circuit breakers, tied together
c)
one (1) non-fused single pole disconnect only
d)
one (1) fuse only
9 The Code requires at least two small appliance branch circuits for dwellings. These small appliance circuits shall be assigned a load of _______ volt-amperes each when calculating feeders and service entrance requirements.
            
a)
750
b)
1000
c)
1500
d)
2000
10 Which of the following receptacles may be connected to the small appliance circuits?
            
a)
receptacles for electric clocks in the kitchen
b)
garage ceiling receptacles for garage door openers
c)
hallway receptacles which are close to the kitchen
d)
living room receptacles
11 A metal underground water pipe in direct contact with the earth for at least 10 feet has traditionally been a preferred grounding electrode. For all new construction, a metal underground water pipe is _______.
            
a)
still the preferred grounding electrode, by itself, when available.
b)
still an acceptable grounding electrode, but it must be supplemented by at least one additional grounding electrode.
c)
no longer accepted as a grounding electrode
d)
accepted as the only grounding electrode when buried at least three(3) feet below the surface.
12 Thermal insulation shall not be installed within _____ inches of a recessed light fixture enclosure unless the recessed light fixture is identified as suitable for direct contact with insulation.
            
a)
2
b)
3
c)
4
d)
5
13 The No. 12 or 14 grounded conductor of a branch circuit shall be identified by a ______ wire.
            
a)
white or gray color or three continuous white stripes on other than green insulation.
b)
green color or bare copper
c)
yellow color
d)
black color
14 The Code defines "continuous load" as a load where the maximum current is expected to continue for at least _______.
            
a)
one hour or more
b)
two hours or more
c)
three hours or more
d)
twenty four hours a day
15 For calculating the maximum number of conductors allowed in an outlet box the volume required for each No. 12 conductor is _____ cubic inches.
            
a)
2
b)
2.25
c)
2.5
d)
3
16 Outlet boxes mounted in non-combustible walls or ceilings must be mounted so that they will be set back not more than a maximum of _____ inch from the finished surface.
            
a)
1/8
b)
1/4
c)
1/2
d)
3/4
17 Screw-shell lampholders shall be wired so that the ______ conductor is connected to the screw-shell.
            
a)
grounding
b)
grounded
c)
ungrounded
d)
bare
18 Metal enclosures for overcurrent devices in damp or wet locations shall be mounted so there is at least ______ inch air space between the wall or other support surface.
            
a)
1/8
b)
1/4
c)
3/8
d)
1/2
19 Are least ______ inches of free conductor shall be left at each outlet and switch point for splices or for the connection of fixtures or devices.
            
a)
5
b)
6
c)
7
d)
8
20 In determining load on the volt-ampere per square foot basis the _______the building shall be used for each floor.
            
a)
outside dimensions of
b)
inside dimensions of
c)
height of
d)
number of rooms in





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