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Low Pressure Mechanic > Exam Practice > Flashcards

Exam Practice Flashcards

0
Q

Why do you open the vent valve before starting the vacuum?

A

To prevent motor overload.

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1
Q

How many millimeters equals one pound of pressure?

A

52 millimeters.

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2
Q

The onan generator should be started loaded?.?

A

False

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3
Q

The metric standard of temperature C degrees used a range of…

A

0-100 degrees.

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4
Q

If there are 2.54 centimeters in an inch, and 36 inches in a yard, the # of centimeters in a yard is…..

A

91.44 centimeters.

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5
Q

The symbol / means….

A

Normal joint with short circuited sleeve insulation standard bonding.

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6
Q

The feeder # and voltage can be found in the ______ on a feeder map.

A

Title box.

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7
Q

A typical decrease in temperature in the reservoir will cause ____

A

A corresponding decrease in pressure in the reservoir.

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8
Q

A normal temperature increase in the cable sheath will cause ____

A

The level in the reservoir to raise.

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9
Q

The type of hammer that has the head entirely fabricated with soft shock absorbing material is the _______.

A

Mallet.

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10
Q

The most popular angle at offset for the jaws of an open end wrench is ?

A

15 degrees.

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11
Q

Gas pliers are also known as?

A

Eagle claws.

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12
Q

The Phillips screwdriver is available in how many sizes?

A

4

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13
Q

The materials which can be used for soft faced hammers include?

A

Lead, brass, and rawhide.

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14
Q

A ___ in a smooth jaw adjustable wrench used on large union nut.

A

Ford wrench.

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15
Q

The type of chisel used to cut narrow surfaces is ?

A

Cape.

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16
Q

When the tubing sticks too far out of the flaring tool when it is flared, the type of damage that will occur is called?

A

Necking.

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17
Q

To change the size of the tubing a tubing bender can bend you must change the ______

A

Roller adapters.

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18
Q

The typical pressure range of a reservoir is____

A

2-30 psi.

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19
Q

In a CC type reservoir, the tank is filled with____

A

Idle oil.

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20
Q

____ is the typical volume capacity of a reservoir.

A

10-20 gallons

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21
Q

A DC type reservoir _______

A

Has cells filled with degasified oil.

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22
Q

A DC type reservoir is _____

A

Fed directly into pothead.

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23
Q

In an AC/BICC reservoir type reservoir, the gas in the cell is usually adjusted to ____when the tank is full.

A

15

24
Q

In an AC/BICC reservoir type reservoir, the cell is full of____

A

Gas.

25
Q

AC reservoirs are ____ because the full pressure range cannot be utilized.

A

Relatively inefficient

26
Q

Before removing a CC reservoir disconnect ____

A

The fluid level switch.

27
Q

When a reservoir adjustment is found is found to be at or above the high check point.

A

Measure temps to determine if the reservoir is in adjustment by the curve.

28
Q

An oil level is read by using a sight glass (which reservoir)

A

CC type

29
Q

If a thermometer is used on a CC type reservoir when placed in the well,

A

It must contact the lead sheath.

30
Q

When cable section is not supervised by an alarm, readings should be taken at least

A

Three times a week(72hours)

31
Q

If a section has a minor leak requiring close monitoring, readings on a non supervised section shall be taken

A

Three days

32
Q

For DC type reservoirs when two reservoirs are connected in parrallel

A

The pressure in only one needs to be measured

33
Q

Fluid pressure setting tolerance for DC type reservoir is

A

.5 min and .5 below max

34
Q

To find out how many gallons of fluid are in an AC reservoir

A

The insulating pressure must be measured

35
Q

Who should physically check the positions of valves during a valve verification check

A

Splicer and helper

36
Q

When the ______ seals the valves it is witnessed by the ______

A

Helper and splicer

37
Q

Fluid leaks in dielectric systems are critical because,

A

They reduce the insulating abilities of the system

38
Q

A likely location for a CO2 leak in a DC reservoir is

A

Auxiliary gas tank connections

39
Q

If a loose fitting is the suspected cause of a fluid leak

A

Tighten the suspected fitting

40
Q

You are working on feeder 69M43-44 in the MH. The CMX-270 doesn’t work what should you do?

A

Stop the job

41
Q

It is not necessary to treat the oil on BICC truck

A

False

42
Q

When performing a code 51, who verifies the valve positions?

A

Second man

43
Q

When adjusting reservoir,the Barton relay valve should be closed

A

True

44
Q

Closed circuit means

A

Light on; section clear

45
Q

A steady light on the supervisory board indicates an alarm

A

True

46
Q

The oil in the plant or BICC truck must be tested for gas contents before it can be used

A

True

47
Q

When working in a manhole, how often do you check the atmosphere?

A

Every two hours

48
Q

The oil temperature in the plant should not exceed

A

85 degrees f

49
Q

Who’s responsible for safety?

A

Everyone (all of the above)

50
Q

DC or CC type reservoirs are identical?

A

True

51
Q

If a Barton relay is at zero mm what is the percentage of oil in the reservoir?

A

50%

52
Q

After completing a joint treatment, which hose do you disconnect first?

A

Bottom hose

53
Q

What is a code 47?

A

Relay calibration

54
Q

What type of reservoir is used in a feeding section?

A

CC,DC, BICC (all of the above)

55
Q

In a BICC reservoir the oil is located in the cell

A

False

56
Q

It is not necessary to make a flush connection when servicing cable reels.

A

False

57
Q

To have a good vacuum, the barometer reading on the manometer should total approximately 762mm

A

True

Low Pressure Mechanic (1 decks)

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