CE basic ch.6

Question 1

The noise levels of generators sized 5Kw to 200 Kw range from how many decibels from 25 feet?

Answer 1

25 dBa- 93 dBa

Question 2

Single hearing protection is needed for noise less than how many dBa?

Answer 2

84 dBa

Question 3

Double hearing protection is needed for noise levels greater than how many dBa?

Answer 3

104 dBa

Question 4

Generators must not be closer than how man feet to a load because of noise,fire hazard, and air circulation?

Answer 4

25Ft

Question 5

A generator set should not be operated while inclined more than how many degrees from level?

Answer 5

15 degrees

Question 6

The annual load factor of a well operated active base should be 50% or more with a power factor of what percent or higher?

Answer 6

80%

Question 7

Practically all general-purpose lighting in the U.S and at U.S overseas bases is how many volts?

Answer 7

120V

Question 8

What is the sum of the rated capacities of all electrical appliances, lamps, motors, and so on connected to the wiring of the system?

Answer 8

Connected load

Question 9

What is the ratio between the actual maximum demand and the connected load called?

Answer 9

Demand factor

Question 10

Shelters should have additional windows or doors installed in localities where the summer temperatures exceed what temperature at any time?

Answer 10

80°F

Question 11

Exhaust piping inside a building has to Be covered with insulation capable of withstanding a temperature of how many degrees?

Answer 11

1500°F

Question 12

A ground rod must have a minimum diameter of 5/8 inches if solid or what size of pipe?

Answer 12

3/4 inches

Question 13

A ground plate must have a minimum area of how many square feet and, where practical, be embedded below the permanent moisture level?

Answer 13

2

Question 14

The National Electrical Code states that a single electrode consisting of a rod, pipe, or plate that does not have resistance to ground of how many ohms or less will be augmented by additional electrodes?

Answer 14

25

Question 15

All electrical generators operating at how many volts or less must be solidly grounded?

Answer 15

600V

Question 16

A ground rod has to have a minimum diameter of 5/8 inch if solid and 3/4 inch if pipe, and it has to be driven to a minimum of how many feet?

Answer 16

8 ft

Question 17

Trenches should be deep enough to bury cables at least 18 inches (how many inches in traffic areas and under roadways) below the surface of the ground to prevent disturbance of the cable by frost or subsequent surface digging?

Answer 17

24

Question 18

Watches should be avoided that exceed how many hours unless emergency conditions dictate their use?

Answer 18

8 hours

Question 19

What is a complete daily record of the operating hours and conditions of the generator set?

Answer 19

Station log

Question 20

The engine on generator sets should not be cranked in excess of how many seconds at a time?

Answer 20

15 seconds

Question 21

How much time should the starter on generator sets have to cool between cranking?

Answer 21

3 minutes

Question 22

What is a ratio, percentage, relationship between watts (true power) of a load and the product of volts and amperes (apparent power) necessary to supply the load?

Answer 22

Power factor

Question 23

Electrolytes must never exceed what temperature when being placed in dry charged cells?

Answer 23

90°F

Question 24

What is a routine charge given according to the battery name plate data during the ordinary cycle of operation to restore the battery to its charged condition?

Answer 24

Normal charge

Question 25

What is a special extended normal charge that is given periodically to batteries as part of a maintenance routine?

Answer 25

Equalizing

Question 26

What is used when a battery must be recharged in the shortest possible time?

Answer 26

Fast charge

Question 27

What is the instrument used to measure the amount of active ingredients in the electrolyte of the battery?

Answer 27

Hydrometer

Question 28

What is the ratio of the weight of the electrolyte to the weight of the same volume of pure water?

Answer 28

Specific gravity

Question 29

What is a device used to compare the phase sequence of three-phase generators or motors?

Answer 29

Phase sequence indicator

Question 30

What breaks or interrupts the circuit anytime there is a short circuit or over load condition in the load cable?

Answer 30

Circuit breaker

Question 31

What includes buses and automatic over-current protective devices placed in a cabinet or cutout box and mounted in or against a wall or partition?

Answer 31

Panelboard

Question 32

What are the three major categories of maintenance?

Answer 32

Depot,intermediate, and organizational

Question 33

Compressed air shall not exceed what?

Answer 33

30psig

Question 34

What type of maintenance includes the hourly, daily, and weekly maintenance requirements recommended in the manufacturer’s literature?

Answer 34

Operator

Question 35

What type of maintenance includes the monthly, quarterly, semiannual, and annual maintenance checks recommended in the manufacturer’s literature?

Answer 35

Preventive

Question 36

What acts as a heat exchanger for the engine coolant and helps the engine cool?

Answer 36

Radiator

Question 37

What measures the oil in the engine drain pan?

Answer 37

Dipstick

Question 38

What regulates the fuel amounts that enter the engine to maintain the desired speed?

Answer 38

Actuator