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CDC 3E052D Volume 1. Generator Operations > CDC 3E052D Volume 1. Generator Operations > Flashcards

CDC 3E052D Volume 1. Generator Operations Flashcards

1
Q
  1. (001) What should you add if you find a lead acid battery that has low electrolyte in the cells?
    a. Baking soda to the cells.
    b. Sulfuric acid to the cells.
    c. Distilled water to the cells.
    d. Cultivated water to the cells.
A

c. Distilled water to the cells.

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2
Q
  1. (001) What do the yellow lamps on an Onan generator panel indicate?
    a. A problem has occurred.
    b. A problem is developing.
    c. The generator has shut down.
    d. The generator is operating normally.
A

b. A problem is developing.

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3
Q
  1. (002) Which component do you use to adjust the voltage to the desired value on an Onan generator?

a. Voltage-adjusting motor.
b. Voltage-adjusting rheostat.
c. Frequency-adjusting motor.
d. Frequency-adjusting rheostat.

A

b. Voltage-adjusting rheostat.

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4
Q
  1. (002) How can you often determine that an electrical system is getting hot?
    a. The casing begins to smoke.
    b. The generator stops operating.
    c. The component breaks into two pieces.
    d. It creates a smell before you can see anything.
A

d. It creates a smell before you can see anything.

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5
Q
  1. (002) If the engine does not shut down when the fuel is shut off, what should you shut off next?
    a. Coolant.
    b. Air supply.
    c. Fuel supply.
    d. Lubricating oil.
A

b. Air supply.

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6
Q
  1. (003) What must you do before you check the oil level during a postoperational inspection?
    a. Add oil to adjust it to the full mark.
    b. Let the engine stand for several minutes.
    c. Check it as soon as the engine shuts down.
    d. The oil is not checked during the postoperational inspection.
A

b. Let the engine stand for several minutes.

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7
Q
  1. (003) What do you not check during a post-operational inspection?
    a. Oil level.
    b. Fuel level.
    c. Coolant level.
    d. Fan belt tension.
A

c. Coolant level.

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8
Q
  1. (003) What form is used for the operation of all standby generators?

a. AF Form 487, Emergency Generator Operating Log (Inspection Testing).
b. AF Form 731, Crankshaft Deflection Record.
c. AF Form 719, Historical Record – Diesel – Electrical Generator and System.
d. AF Form 1167, Daily Power Plant Operating Log (Diesel Electric).

A

a. AF Form 487, Emergency Generator Operating Log (Inspection Testing).

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9
Q
  1. (003) If the engine runs more than one hour, how often must you record readings on the back of the AF Form 487, Emergency Generator Operating Log (Inspection Testing)?

a. 30 minutes.
b. 1 hour.
c. 2 hours.
d. 4 hours.

A

c. 2 hours.

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10
Q
  1. (003) How long do you maintain the AF Form 719, Historical Record—Diesel-Electric Generator and System, on a generator?

a. Two years.
b. Five years.
c. Ten years.
d. Life of the unit.

A

d. Life of the unit.

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11
Q
  1. (004) Select the appropriate formula to answer the question below.
    Kilowatts= volts×amperes×powerfactor / 1000
    Amperage = 1000 × kilowatts / volts × powerfactor
    Kilowatts= volts×amperes×powerfactor×1.73 /1000
    Amperage = 1000 × kilowatts / volts×powerfactor×1.73
    You are operating a single-phase generator producing 240 VAC with an amperage draw of 53 amperes. You need to calculate the kW of the generator. Round it to the nearest kW.

a. 10.
b. 13.
c. 18.
d. 22.

A

a. 10.

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12
Q
  1. (004) Select the appropriate formula to answer the question below.
    Kilowatts= volts×amperes×powerfactor / 1000
    Amperage = 1000 × kilowatts / volts × powerfactor
    Kilowatts= volts×amperes×powerfactor×1.73 /1000
    Amperage = 1000 × kilowatts /volts×powerfactor×1.73
    You are operating a single-phase generator producing 120 VAC with an amperage draw of 75 amperes. You need to calculate the kW of the generator. Round it to the nearest kW.

a. 3.
b. 7.
c. 12.
d. 24.

A

b. 7.

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13
Q
  1. (004) Select the appropriate formula to answer the question below.
    Kilowatts= volts×amperes×powerfactor / 1000
    Amperage = 1000 × kilowatts / volts × powerfactor
    Kilowatts= volts×amperes×powerfactor×1.73 /1000
    Amperage = 1000 × kilowatts / volts×powerfactor×1.73
    You are operating a three-phase generator that produces 120/208 volts. Phase 1 reads 135 amperes, phase 2 reads 130 amperes, and phase 3 reads 134 amperes. You need to calculate the kW of the generator. Round it to the nearest kW.

a. 13.
b. 22.
c. 38.
d. 48.

A

c. 38.

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14
Q
  1. (004) Select the appropriate formula to answer the question below.
    Kilowatts= volts×amperes×powerfactor / 1000
    Amperage = 1000 × kilowatts / volts × powerfactor
    Kilowatts= volts×amperes×powerfactor×1.73 /1000
    Amperage = 1000 × kilowatts /volts×powerfactor×1.73
    You are operating a three-phase generator that produces 120/208 volts. Phase 1 reads 95 amperes, phase 2 reads 100 amperes, and phase 3 reads 93 amperes. You need to calculate the kW of the generator. Round it to the nearest kW.

a. 12.
b. 28.
c. 36.
d. 48.

A

b. 28.

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15
Q
  1. (004) Select the appropriate formula to answer the question below.
    Kilowatts= volts×amperes×powerfactor / 1000
    Amperage = 1000 × kilowatts / volts × powerfactor
    Kilowatts= volts×amperes×powerfactor×1.73 /1000
    Amperage = 1000 × kilowatts / volts × powerfactor ×1.73
    You are operating a three-phase generator that produces 120/208 volts with 100 kW on its power meter but does not have an ammeter. What is the amperage? Round it to the nearest ampere.

a. 347.
b. 601.
c. 602.
d. 1041.

A

a. 347.

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16
Q
  1. (004) Select the appropriate formula to answer the question below.
    Kilowatts= volts×amperes×powerfactor /1000
    Amperage = 1000 × kilowatts / volts × powerfactor
    Kilowatts= volts×amperes×powerfactor×1.73/
    1000
    Amperage = 1000 × kilowatts / volts × powerfactor ×1.73
    You are operating a three-phase generator that produces 120/208 volts with 74 kW on its power meter but does not have an ammeter. What is the amperage? Round it to the nearest ampere.

a. 126.
b. 229.
c. 257.
d. 363.

A

c. 257.

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17
Q
  1. (004) Select the appropriate formula to answer the question below.
    Kilowatts= volts×amperes×powerfactor / 1000
    Amperage = 1000 × kilowatts / volts × powerfactor
    Kilowatts= volts×amperes×powerfactor×1.73 /1000
    Amperage = 1000 × kilowatts/ volts×powerfactor×1.73
    You are operating a single-phase generator that produces 240 VAC with 15 kW on its power meter but does not have an ammeter. What is the amperage? Round it to the nearest ampere.

a. 23.
b. 45.
c. 78.
d. 124.

A

c. 78.

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18
Q
  1. (004) Select the appropriate formula to answer the question below.
    Kilowatts= volts×amperes×powerfactor / 1000
    Amperage = 1000 × kilowatts / volts × powerfactor
    Kilowatts= volts×amperes×powerfactor×1.73 /1000
    Amperage = 1000 × kilowatts / volts×powerfactor×1.73
    You are operating a single-phase generator that produces 120 VAC with 63 kW on its power meter but does not have an ammeter. What is the amperage? Round it to the nearest ampere.

a. 124.
b. 247.
c. 580.
d. 656.

A

d. 656.

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19
Q
  1. (005) For normal operation at a fixed generator site, you need to maintain enough fuel for how long and under what load?

a. Thirty days under no load.
b. Seven days under no load.
c. Three days under full load.
d. Eight hours under full load.

A

c. Three days under full load.

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20
Q
  1. (005) During a monthly inspection, a fixed generator is required to operate for how long and under what load?

a. One hour under no load.
b. Fifteen minutes under no load.
c. One hour under the facility load.
d. Fifteen minutes under the facility load.

A

c. One hour under the facility load.

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21
Q
  1. (005) Doing the annual inspection completely and accurately will increase the life of a generator by up to what percent?

a. 50.
b. 75.
c. 100.
d. 125.

A

a. 50.

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22
Q
  1. (006) When the load is connected to the emergency source, what color is the indicator lamp on an Onan automatic transfer panel?

a. Red.
b. White.
c. Green.
d. Amber.

A

a. Red.

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23
Q
  1. (006) Which of these is an important component of the electronic control system on an Onan automatic transfer panel?

a. Signal module box.
b. Power sentry control.
c. Accessory control panel.
d. Transfer switch assembly.

A

b. Power sentry control.

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24
Q
  1. (006) The range of adjustment on the Onan retransfer time-delay relay is 0 to
    a. 15 seconds.
    b. 120 seconds.
    c. 10 minutes.
    d. 30 minutes.
A

d. 30 minutes.

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25
Q
  1. (006) What is the pickup setting of the overvoltage sensor adjusted to on an Onan automatic transfer panel?

a. 85 to 100 percent of the nominal voltage.
b. 85 to 100 percent of the dropout setting.
c. 105 to 135 percent of the nominal voltage.
d. 105 to 135 percent of the dropout setting.

A

c. 105 to 135 percent of the nominal voltage.

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26
Q
  1. (006) Which component on the Onan automatic transfer panel gives a warning that a transfer or retransfer is about to occur?

a. Signal module.
b. Indicator lamps.
c. Program transition.
d. Power sentry control.

A

a. Signal module.

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27
Q
  1. (006) Which of these is not an alarm circuit on the 10-ampere battery charger for an Onan automatic transfer panel?

a. Low battery voltage.
b. High battery voltage.
c. AC (charger input) failure.
d. DC (charger output) failure.

A

d. DC (charger output) failure.

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28
Q
  1. (007) What position must the motor disconnect switch be in for automatic operation?
    a. On.
    b. Off.
    c. Auto.
    d. Manual.
A

c. Auto.

29
Q
  1. (007) In automatic mode, when will the generator start and transfer load to the emergency source?
    a. When a power interruption occurs on phase 1 of normal power.
    b. When a power interruption occurs on phase 2 of normal power.
    c. When a power interruption occurs on phase 3 of normal power.
    d. When a power interruption occurs on any of the three phases of normal power.
A

d. When a power interruption occurs on any of the three phases of normal power.

30
Q
  1. (007) For manual operation, what position must the motor disconnect switch be in before moving the manual transfer handles?

a. On.
b. Off.
c. Auto.
d. Manual.

A

b. Off.

31
Q
  1. (008) What is the most common material we see used in cables?
    a. Brass.
    b. Copper.
    c. Aluminum.
    d. Copper-clad aluminum.
A

b. Copper.

32
Q
  1. (008) What type of coding is placed on a conductor to identify the type of insulation and what the appropriate use is for the conductor?

a. Lettering.
b. Numbering.
c. Special symbols.
d. Combination of letters, numbers and symbols.

A

a. Lettering.

33
Q
  1. (008) The voltage reconnection panel allows the alternator windings to be connected in
    a. either series or parallel.
    b. both series and parallel.
    c. either sequence or series.
    d. both sequence and parallel.
A

a. either series or parallel.

34
Q
  1. (008) What can happen if you attempt to change the position of the voltage reconnection panel while the generator set is operating?

a. Nothing.
b. Electrocution.
c. The voltage changes.
d. The generator shuts down.

A

b. Electrocution.

35
Q
  1. (008) How is the movable portion of the reconnection panel adjusted to produce the desired voltage output?

a. Turn it over and reconnect it.
b. Rotate it 90° and reconnect it.
c. Align its arrow with the desired control panel arrow.
d. Align its arrow with the desired stationary board arrow.

A

d. Align its arrow with the desired stationary board arrow.

36
Q
  1. (008) What must you change if you find the phase rotation is different from the primary power source?

a. Any two leads.
b. All of the hot leads.
c. One lead and the neutral.
d. All leads, including the neutral.

A

a. Any two leads.

37
Q
  1. (009) What do you use to perform maintenance on a mobile electric power (MEP) generator at a bare base site if you are working in the dark?

a. Light of the moon.
b. Night vision glasses.
c. Generator room lights.
d. Headlights and a flashlight.

A

d. Headlights and a flashlight.

38
Q
  1. (009) What position do we place the battle short switch in during a preoperational inspection on a MEP series generator?

a. ON.
b. OFF.
c. Pulled.
d. Depressed.

A

b. OFF.

39
Q
  1. (009) What lubrication systems pressure will illuminate the low oil pressure indicator during engine operation?

a. 10 ± 5 psi.
b. 15 ± 3 psi.
c. 20 ± 5 psi.
d. 25 ± 3 psi.

A

b. 15 ± 3 psi.

40
Q
  1. (010) When starting a mobile electric power (MEP) series generator, hold the master switch in the START position until the voltage is near normal level, the engine speed has stabilized, and the oil pressure reaches at least

a. 10 psi.
b. 15 psi.
c. 20 psi.
d. 25 psi.

A

d. 25 psi.

41
Q
  1. (010) During an emergency operation, you can apply load after how many minutes of warm-up?

a. 0.
b. 1.
c. 5.
d. 10.

A

a. 0.

42
Q
  1. (010) What indicates that a generator is at full load?

a. Ammeter is at 50 percent.
b. Ammeter is at 100 percent.
c. kW meter is at 100 percent.
d. kW meter is at 125 percent.

A

b. Ammeter is at 100 percent.

43
Q
  1. (010) Who assists balancing the load that has more than 10 percent difference between the phases?

a. Electricians.
b. Civil engineer.
c. Facility manager.
d. Engineer assistants.

A

a. Electricians.

44
Q
  1. (010) After each load change, check the generator for load,
    a. leaks, and fluid levels.
    b. voltage, and frequency.
    c. voltage, and fluid levels.
    d. operation, and frequency.
A

b. voltage, and frequency.

45
Q
  1. (010) Why is the load bank allowed to operate for five minutes after the generator has reached no load?

a. To warm up.
b. To cool down.
c. For the next use.
d. To reload the generator.

A

b. To cool down.

46
Q
  1. (010) What is it called during those times of day when customers consume a greater amount of electricity?

a. Peak demand periods.
b. Low customer demands.
c. Increased load moments.
d. Temporary load increases.

A

a. Peak demand periods.

47
Q
  1. (010) When the possibility of large fluctuating load changes exists, at what percentage of the running unit’s capacity do you parallel another unit into the load?

a. No more than 25 percent.
b. No more than 50 percent.
c. 25 percent or more.
d. 50 percent or more.

A

d. 50 percent or more.

48
Q
  1. (010) What does the phase relationship of the output of two generators refer to as being the same?
    a. Precise frequency level.
    b. Phase rotation direction.
    c. Maximum voltage value.
    d. Instantaneous voltage value.
A

d. Instantaneous voltage value.

49
Q
  1. (010) What load division corrections should you make if the load is different and the bus frequency is low?

a. Raise fuel to all generators.
b. Raise fuel to the low load generator.
c. Lower fuel to the high load generator.
d. Lower fuel to the high load generator and raise fuel to the low load generator.

A

b. Raise fuel to the low load generator.

50
Q
  1. (010) What load division corrections should you make if the load is the same and the bus frequency is high?

a. Lower fuel to all generators.
b. Raise fuel to the low load generator.
c. Lower fuel to the high load generator.
d. Lower fuel to the high load generator and raise fuel to the low load generator.

A

a. Lower fuel to all generators.

51
Q
  1. (010) What is it called if currents flow from one generator to another when generators operate in parallel?

a. Motorization.
b. Crosscurrents.
c. Stray currents.
d. Reverse power.

A

b. Crosscurrents.

52
Q
  1. (010) When operating a MEP generator, when do you release the MASTER switch to the PRIME and RUN position?

a. Temperature has reached 180oF and voltage reaches the preset value.
b. Temperature has reached 120oF and frequency reaches the desired value.
c. Oil pressure has reached 60 psi and the battery charging ammeter show a charge.
d. Oil pressure has reached at least 25 psi and voltage and frequency have developed.

A

d. Oil pressure has reached at least 25 psi and voltage and frequency have developed.

53
Q
  1. (010) When operating a generator in extreme cold conditions, what step should you take to prevent batteries from freezing?

a. Keep them fully charged.
b. Use winter type electrolyte.
c. Add baking soda to the electrolyte.
d. Set the battery directly on the ground.

A

a. Keep them fully charged.

54
Q
  1. (010) When operating a generator in extreme cold conditions, what step should you take to reduce the accumulation of moisture in the fuel system?

a. Use heated fuel tanks.
b. Add alcohol to the fuel.
c. Keep the fuel tanks as full as possible.
d. Change the fuel to a winter grade fuel.

A

c. Keep the fuel tanks as full as possible.

55
Q
  1. (010) When operating a generator in extreme heat conditions, what step should you take to prevent the generator from overheating?

a. Use cooled air in the intake system.
b. Add additional coolant to the system.
c. Close all doors and panels during operation.
d. Connect all of the cooling systems together.

A

c. Close all doors and panels during operation.

56
Q
  1. (011) During a mobile electric power (MEP) generator monthly inspection, the fuel level needs to be sufficient to last how long?

a. Ten days of operation.
b. Three days of operation.
c. Seven days of operation.
d. To do the current operation.

A

d. To do the current operation.

57
Q
  1. (011) During a monthly inspection, operate the mobile electric power (MEP) series generator under load using a

a. facility load for a quarter hour.
b. load bank for a half hour.
c. load bank for one hour.
d. facility load for two hours.

A

c. load bank for one hour.

58
Q
  1. (011) During the mobile electric power (MEP) series generator annual inspection, check all of the cannon plugs to make sure they are

a. securely fastened.
b. plugged in correctly.
c. wired for continuity.
d. installed in the right connector.

A

a. securely fastened.

59
Q
  1. (011) During the mobile electric power (MEP) series generator annual inspection, what maintenance is done to the mobilizers?

a. Ensure the tire pressure is between 50 and 75 psi.
b. Remove the wheels and pack the bearings with grease.
c. Ensure the wheel lug nuts are tightened to 75 foot-pounds.
d. Remove the wheels and grease the brakes to prevent corrosion.

A

b. Remove the wheels and pack the bearings with grease.

60
Q
  1. (012) What are load banks equipped with to provide a simulated load to a generator?
    a. Circuit breakers and fuses.
    b. Fan motors and large cables.
    c. Electric motors and system controls.
    d. Resistive type heating elements and cooling fans.
A

d. Resistive type heating elements and cooling fans.

61
Q
  1. (012) What load bank component contains reconnection bars that must be removed and configured according to the voltage input from the generator?

a. Volts select switch.
b. Blower fail indicator.
c. kW load step switches.
d. Voltage reconnection panel.

A

d. Voltage reconnection panel.

62
Q
  1. (012) What load bank component is a series of switches used to select a specific resistive load value from your generator?

a. Volts select switch.
b. Blower fail indicator.
c. kW load step switches.
d. Voltage reconnection panel.

A

c. kW load step switches.

63
Q
  1. (012) What load bank component is used to check voltage between phases of generator output during three-phase operation?

a. Volts select switch.
b. Blower fail indicator.
c. kW load step switches.
d. Voltage reconnection panel.

A

a. Volts select switch.

64
Q
  1. (012) What load bank component activates to open the master load switch if the blower fails?
    a. Volts select switch.
    b. Safety airflow switch.
    c. kW load step switches.
    d. Voltage reconnection panel.
A

b. Safety airflow switch.

65
Q
  1. (013) What is the purpose, besides preventing carbon buildup, of operating a generator using a load bank?

a. It makes the engine smoke more.
b. It makes the engine operate at a higher speed.
c. It lets you know that the generator will operate with clean fuel.
d. It lets you know that the generator is capable of operating at full load.

A

d. It lets you know that the generator is capable of operating at full load.

66
Q
  1. (013) What must be done to the connections if you must connect the load bank cables to the ends of the generator output cable?

a. Plug the cables in properly.
b. Wrap the connections with insulating tape.
c. Leave them bare to allow proper cooling of the connector.
d. Operate the load bank at 80 percent capability to prevent overheating.

A

b. Wrap the connections with insulating tape.

67
Q
  1. (013) You know what voltage to set the load bank to before operating it by checking the
    a. indicator tape on the generator.
    b. engine data plate on the generator.
    c. battery configuration board on the generator.
    d. voltage reconnection terminal board on the generator.
A

d. voltage reconnection terminal board on the generator.

68
Q
  1. (013) How will you know where to place the reconnection bars to set them for the proper voltage?
    a. The position of the switch on the generator.
    b. The position of the switch on the load bank.
    c. A diagram of configuration on the generator.
    d. A diagram of configuration on the load bank.
A

d. A diagram of configuration on the load bank.

69
Q
  1. (001) Where should the coolant level be if the generator is not equipped with a recovery tank?
    a. In the filler neck.
    b. Four inches above the radiator core.
    c. Three inches from the top of the filler neck.
    d. Two inches from the bottom of the filler neck.
A

d. Two inches from the bottom of the filler neck.

CDC 3E052D Volume 1. Generator Operations (1 decks)

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