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WorksheetsWEEK 8 EES102 Review
Total questions: 20
Worksheet time: 10mins
What is alternating current?
A current that flows in one direction
a current that changes direction periodically
Electricity that changes voltage and resistance constantly
1. In determine wire size by gauge, the smaller the gauge number,
A. the lower the voltage it can handle
B. the larger the wire
C. the smaller the wire
D. the less it cost
2. Any conductor used in an RV needs to be sized according to
A. the load and the overcurrent protection provided
B. the location and the length the wire will be run
C. the distribution panel size and capacity
D. the size and type of the RV
In the event of an excessive flow of current, fuses and circuit breakers are designed to protect a circuit by
A. opening only during component start up
B. opening and interrupting the flow of electricity through the circuit
C. opening only during a short circuit
D. limiting the amount of current flow
The most common types of fuses are
A. push button and toggle types
B. blade and cylinder types
C. “bat” and “aux”
D. Type 1 and Type II
9. A circuit supplied with 110V carries 5 amps current. The resistance valve of the circuit would be
A. 550 ohms
B. 22 ohms
C. 5.5 ohms
D. 55 ohms
10. If a technician changes a resistor with one of a lower resistance, at the same voltage its amperage draw will
A. increase
B. decrease
C. remain the same
D. decrease 1 amp for every 10 volts
When one volt is used to move one amp through a circuit, the work accomplished is equal to
A. one watt of power
B. 100 watts of power
C. 10 kilowatts
D. 1 ohm
The resistance of a 100 W, 120V lamp is approximately
A. 1 ohm
B. 144 ohm
C. 400 ohm
D. 1200 ohm
In an electrical circuit, what happens to the current flowing through the wire if voltage is reduced to the half and resistance of the wire is doubled?
A. four times
B. double
C. a quarter
D. half
The specific gravity hydrometer reading of a fully charged battery will be
A. 1,200B.
1,225
C. 1,265
D. 1,300
Extreme care should be exercised around charging batteries because a spark could
A. shock the technician
B. cause an explosion
C. short out the battery cell
D. ruin the computer
A battery hydrometer is used to measure _________ of a battery
A. charge level
B. specific gravity
C. electrolyte stability
D. chemical balance
What is the purpose of a power converter?
A. charge 120 VAC to 12 VAC
B. change 120 VAC to 12 VDC
C. change 12 VDC to 120 VAC
D. change 12 VDC to 120 VDC
Before removing and installing a power converter, the technician would
A. turn the branch AC circuit breaker “on”
B. always disconnect battery and AC power supply
C. always disconnect battery isolator
D. always short cross battery terminal (+) to ground to discharge converter filters
Inverters are rated in
A. kilowatts
B. kilowatt-hours
C. watts
D. milliwatts
What is true of inverters?
A. most inverters are not solid state
B. Many inverters parts are technician-accessible
C. Inverters are hard to repair in the field
D. They have a wide range of field services available
Which device keeps the batteries adequately charged to provide the necessary 12 VDC power?
A. isolator
B. inverter
C. alternator
D. rectifier
If the battery voltage with the engine off is 12.65 VDC, and once the engine is started, the battery voltage is at 14.5 VDC. This could indicate
A. faulty regulator
B. faulty alternator
C. loose battery cable connection
D. normal condition
Solar power is the production of electricity when __________ strikes a photovoltaic module.
A. ambient temperature
B. a non-renewable energy source
C. sunlight
D. fuel cells
