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SKT Book 1 > B1U3 General Tasks And Equipment > Flashcards

B1U3 General Tasks And Equipment Flashcards

1
Q

What is the function of the control transformer?

A

To provide the proper value of voltage to operate the power contactor.

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2
Q

What is the purpose of the voltmeter and ammeter?

A

These allow you to determine the rate of charge that the battery is drawing.

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3
Q

What causes the output voltage to be lower than the input voltage on a battery charger?

A

The secondary windings have fewer turns than the primary windings.

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4
Q

What is the primary concern when adjusting a battery charger?

A

The output voltage.

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5
Q

If you are working with a 12-volt battery, what is the range of the output of the battery?

A

Between 12.5 to 13.2 volts.

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6
Q

Why must you check the adjustments you made to a battery charger the following day?

A

To take a second look at the charging rate to make sure it is set correctly.

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7
Q

What are the two types of load banks that have been developed?

A

Portable and stationary.

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8
Q

What is the function of the control/blower voltage selector switch on a load bank?

A

It allows the operator to select internal or external power sources.

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9
Q

What is the function of the load voltage selector switch on a load bank?

A

It allows load bank to be configured for different generator output voltages.

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10
Q

What is the function of the master load switch on a load bank?

A

It connects the generator power to the circuit breakers for the kW step switches.

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11
Q

What is the function of the AC ammeter on a load bank?

A

It indicates the amperage being drawn by the load bank from the generator.

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12
Q

What is the function of the internal blower on a load bank?

A

It removes heat from the load bank resistor elements.

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13
Q

What does testing generators with a load bank prevent?

A

This provides the generator with enough load to prevent carbon buildup known as wet stacking.

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14
Q

Why should you wear leather gloves when handling electrical cables?

A

To prevent injury.

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15
Q

What should you do before you operate any piece of equipment that you are unfamiliar with?

A

Read the manufacturer’s manual.

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16
Q

When inspecting the load bank, what should you look for inside the load bank housing?

A

Search for any debris or foreign matter inside load bank that could be blocking airflow.

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17
Q

What safety precaution should you observe if you are replacing the heater elements on a load bank?

A

Be sure that the heater elements have had time to cool completely before you begin your work.

18
Q

Describe galvanic corrosion.

A

It can be one of the most common forms of corrosion as well as one of the most destructive. It occurs when two dissimilar metal types are in contact with each other and moisture is introduced. Galvanic corrosion seriously degrades the softer of the two metals.

19
Q

How does pitting first appear on a metal surface?

A

As a gray or white powdery substance.

20
Q

What is the key to a good corrosion control program?

A

Preventive maintenance.

21
Q

What are the two types of coolant heaters?

A

Circulating and immersion.

22
Q

How do immersion coolant heaters spread heat throughout the engine?

A

By convection.

23
Q

Why is it important that you do not use starting fluid on engines that are equipped with glow plugs?

A

Using starting fluid can cause an explosion that can damage the engine and cause injury to you.

24
Q

What is the only safe method of using ether?

A

With a closed dispensing system.

25
Q
  1. (009) What battery charger component decreases the input voltage to the required output voltage to provide the battery with a charge?

a. Voltmeter.
b. Load switch.
c. Power diode.
d. Power transformer.

A

D. Power Transformer

26
Q
  1. (009) Which battery charger component rectifies alternating current output of power transformer to direct current?

a. Voltmeter.
b. Load switch.
c. Power diode.
d. Power transformer.

A

C. Power Diode

27
Q
  1. (009) What is the primary concern when adjusting a battery charger?

a. Input voltage.
b. Output voltage.
c. Input amperage.
d. Output amperage.

A

B. Output voltage

28
Q
  1. (009) What battery charger fault situation is indicated by a fully charged battery and a high charging rate?

a. Defective rectifier circuit.
b. Defective voltage regulator.
c. Open battery connections.
d. Shorted battery.

A

B. Defective Voltage Regulator

29
Q
  1. (010) Which load bank control contains reconnection bars that can 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

30
Q
  1. (010) Which load bank control is a series of switches used to select a specific resistive load value from the generator?

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

A

C. KW load step switches

31
Q
  1. (010) Which load bank control 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

32
Q
  1. (010) Which load bank control illuminates if the blower fails?

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

A

B. Blower Fail Indicator

33
Q
  1. (010) 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.

34
Q
  1. (010) When you must connect the load bank cables to the ends of the generator output cable, you must

a. plug the connections into the cables properly.
b. wrap the connections with insulating tape.
c. leave the connections bare to allow proper cooling.
d. operate the load bank at 80 percent capability to prevent overheating the connections.

A

A. Plug the connections into the cables properly

35
Q
  1. (010) 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

A. The position of the switch on the generator

36
Q
  1. (010) Before you install an electrical component on a load bank, be sure it

a. is the same size as the one being replaced.
b. is the same color as the one being replaced.
c. has the same manufacturer as the one being replaced.
d. has the same electrical rating as the one being replaced.

A

D. Has the same electrical rating as the one being replaced.

37
Q
  1. (011) Which type of corrosion do we find most on aluminum?

a. Stress.
b. Pitting.
c. Galvanic.
d. Exfoliation.

A

B. Pitting

38
Q
  1. (011) What is the key to a good corrosion control program?

a. Catching it early.
b. Preventive maintenance.
c. Cleaning it when you find it.
d. Cleaning it when it gets severe.

A

B. Preventative maintenance

39
Q
  1. (012) Which coolant heater has the main advantage of warming the engine in a very short period of time?

a. Blanket.
b. Immersion.
c. Direct heat.
d. Circulating.

A

D. Circulating

40
Q
  1. (012) Which coolant heater is installed internally in the engine block in place of a freeze plug?

a. Blanket.
b. Circulating.
c. Direct heat.
d. Immersion.

A

D. Immersion

41
Q
  1. (012) What is the only safe method of using ether in an engine?

a. Spray can.
b. Liquid mixture.
c. Open dispensing system.
d. Closed dispensing system.

A

D. Closed dispensing system

SKT Book 1 (6 decks)

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