0% Question 1 of 12 1. How are batteries rated?A.Coulombs per secondB.Ampere hour (A/H)C.Cell resistanceD.Forward breakover voltage Question 1 of 12Question 2 of 12 2. What is the ratingĀ of connected battery bank shown in the diagram below? A.24v, 10AHB.12v, 5AHC.24v, 5AHD.12v, 10AHQuestion 2 of 12Question 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 faultyB.Motor frame bonding conductor is brokenC.Motor supply voltage has changed D.Brushes not located on neutral planeQuestion 3 of 12Question 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 contactorD.2 Wire control circuit with a jog PB in series with the contactorQuestion 4 of 12Question 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 coatingB.Make sure the coating is wiped with a clean lint towel before installation C.Remove the coating from the surface to ensure good electrical contactD.Apply a joint compound over the coating Question 5 of 12Question 6 of 12 6. What is the function of a rectifier?A.AC in, DC out B.DC in, AC outC.Double the frequency of the inputD.Cancel out 2nd harmonicsQuestion 6 of 12Question 7 of 12 7. Core losses in a transformer are due to?A.Polarization and equipment lossesB.Copper and harmonic lossesC.Aluminum and line losses D.Eddy currents and hysteresis lossesQuestion 7 of 12Question 8 of 12 8. What do brushes of a DC generator make contact with?A.InterpolesB.RotorC.CommutatorD.Slip ringsQuestion 8 of 12Question 9 of 12 9. Overloads are designed to protect what?A.Conductors B.Motors C.Diodes D.CapacitorsQuestion 9 of 12Question 10 of 12 10. Refer to the diagram below, what is the line voltage? A.120vB.360vC.240vD.208vQuestion 10 of 12Question 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. $1.16B.$2.22C.$4.56D. $1.44Question 11 of 12Question 12 of 12 12. What type of power does a Wattmeter read?A.Reactive powerB.Apparent powerC.VAR'sD.True powerQuestion 12 of 12 Loading...
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