Question 1 of 12

1. How are batteries rated?

A.Coulombs per second

B.Ampere hour (A/H)

C.Cell resistance

D.Forward breakover voltage

Question 1 of 12

Question 2 of 12

2. What is the rating of connected battery bank shown in the diagram below? 

A.24v, 10AH

B.12v, 5AH

C.24v, 5AH

D.12v, 10AH

Question 2 of 12

Question 3 of 12

3. You notice that brushes on a DC motor are sparking during operation, what is the possible cause?

A.The DC motor is faulty

B.Motor frame bonding conductor is broken

C.Motor supply voltage has changed

D.Brushes not located on neutral plane

Question 3 of 12

Question 4 of 12

4. What type of control circuit device would provide low voltage release of a motor?

A.2 wire control device with its contact connected in series with the contactor

B.2 wire control device with its contact connected in series with a momentary manual PB and contactor

C.2 wire control device with its contact connected in series with a spring return to off selector switch and contactor

D.2 Wire control circuit with a jog PB in series with the contactor

Question 4 of 12

Question 5 of 12

5. When bonding electrical equipment that contains a layer of paint or other non conductive coating, what needs to be done before installation?

A.Nothing, fault current will be sufficient to flow to ground through the coating

B.Make sure the coating is wiped with a clean lint towel before installation

C.Remove the coating from the surface to ensure good electrical contact

D.Apply a joint compound over the coating

Question 5 of 12

Question 6 of 12

6. What is the function of a rectifier?

A.AC in, DC out

B.DC in, AC out

C.Double the frequency of the input

D.Cancel out 2nd harmonics

Question 6 of 12

Question 7 of 12

7. Core losses in a transformer are due to?

A.Polarization and equipment losses

B.Copper and harmonic losses

C.Aluminum and line losses

D.Eddy currents and hysteresis losses

Question 7 of 12

Question 8 of 12

8. What do brushes of a DC generator make contact with?

A.Interpoles

B.Rotor

C.Commutator

D.Slip rings

Question 8 of 12

Question 9 of 12

9. Overloads are designed to protect what?

A.Conductors

B.Motors

C.Diodes

D.Capacitors

Question 9 of 12

Question 10 of 12

10. Refer to the diagram below, what is the line voltage? 

A.120v

B.360v

C.240v

D.208v

Question 10 of 12

Question 11 of 12

11. A 1500w baseboard heater is turned on for 6 hours, if the cost of electricity per KW/h is 16 cents, what is the total cost of running this heater?

A. $1.16

B.$2.22

C.$4.56

D. $1.44

Question 11 of 12

Question 12 of 12

12. What type of power does a Wattmeter read?

A.Reactive power

B.Apparent power

C.VAR's

D.True power

Question 12 of 12