CSLB C10 Test 1
A 5 kW appliance is used for 5 hours. At $0.014 per $0.35
kWh, the cost of running the appliance is:
A 12-volt direct current, 13-watt fluorescent light is 156
controlled by a photocell. The average daily on-time
is 12 hours per day. How many watt-hours are
consumed by the light on an average day?
A 50 kVA transformer supplies 480 V and 40 A. What kW [single phase] = (E x I)/1000 = (480 V x 40 A)/1000 = 19.2 kW
is its kW rating?
50 kVA would be used in which of the following? warehouse
65 street lights are fed by a 2275-volt series circuit. 35 V
What is the voltage across each light?
A 110 W lamp is connected to a 220 V line. What is 440 ohms
the resistance?
Page 1 of 20
,CSLB C10 Test 1
After a major accident, Cal/OSHA must investigate 3 days
within:
After installing a new A/C how would you test it? turn on the breaker and check voltage
All of the following can be used to measure ground transformer
resistance except a(n):
The allowable voltage drop of a branch circuit 3%
connected to a heater is:
An ammeter must be connected in _________ with the series
load.
An appliance on a 20-amp branch circuit should not 16 amps
draw more than:
Bending conduit is best done with a: field hickey
Page 2 of 20
, CSLB C10 Test 1
The cable that has an internal bonding strip of AC
copper or aluminum in contact with armor for its
entire length is:
Cal/OSHA requires guardrails for scaffolds over 7-½'
_____ in height.
The conductors and equipment connecting the service
electrical supply system to the wiring system is
called the:
A contractor discovers a serious code violation on The work must stop until the contractor reports the violation and has the
an approved set of plans. plans corrected.
The current of a high-voltage supply line is best clamp-on ammeter
measured with a:
Page 3 of 20
A 5 kW appliance is used for 5 hours. At $0.014 per $0.35
kWh, the cost of running the appliance is:
A 12-volt direct current, 13-watt fluorescent light is 156
controlled by a photocell. The average daily on-time
is 12 hours per day. How many watt-hours are
consumed by the light on an average day?
A 50 kVA transformer supplies 480 V and 40 A. What kW [single phase] = (E x I)/1000 = (480 V x 40 A)/1000 = 19.2 kW
is its kW rating?
50 kVA would be used in which of the following? warehouse
65 street lights are fed by a 2275-volt series circuit. 35 V
What is the voltage across each light?
A 110 W lamp is connected to a 220 V line. What is 440 ohms
the resistance?
Page 1 of 20
,CSLB C10 Test 1
After a major accident, Cal/OSHA must investigate 3 days
within:
After installing a new A/C how would you test it? turn on the breaker and check voltage
All of the following can be used to measure ground transformer
resistance except a(n):
The allowable voltage drop of a branch circuit 3%
connected to a heater is:
An ammeter must be connected in _________ with the series
load.
An appliance on a 20-amp branch circuit should not 16 amps
draw more than:
Bending conduit is best done with a: field hickey
Page 2 of 20
, CSLB C10 Test 1
The cable that has an internal bonding strip of AC
copper or aluminum in contact with armor for its
entire length is:
Cal/OSHA requires guardrails for scaffolds over 7-½'
_____ in height.
The conductors and equipment connecting the service
electrical supply system to the wiring system is
called the:
A contractor discovers a serious code violation on The work must stop until the contractor reports the violation and has the
an approved set of plans. plans corrected.
The current of a high-voltage supply line is best clamp-on ammeter
measured with a:
Page 3 of 20
