CE ADVANCE; CHAPTER 2,3;

Question 1

What rule is used to determine the direction of current in a given situation in an external
circuit to which the voltage is applied?

Answer 1

Left hand rule

Question 2

the distance from zero to the maximum value of each alternation is called the?

Answer 2

amplitude

Question 3

__________ of an alternating voltage
or current is the value of voltage or current at
one particular instant

Answer 3

The instantaneous value

Question 4

Inductance is the characteristic of an electrical circuit that opposes the ?

Answer 4

the starting, stopping, or a change in value of current.

Symbol is L

Basic unit of inductance is Henry

Question 5

The ability of a circuit to store electrical energy

Answer 5

Capacitance.

Basic unit of capacitance is a farad

Question 6

Insulating material in a capacitor is referred to as the?

Answer 6

Dielectric

Question 7

what, in a DC generator, replaces the slip rings of the AC generator?

Answer 7

Commutator

Question 8

The annual load factor of a well operated base should be____ percent or more with a power factor of ___ percent or higher.

Answer 8

50 percent

80 percent

Question 9

electrical loads are generally measured in terms of?

Answer 9

amperes, kilowatts, or kilo volt amperes.

Question 10

what must be determined before designing any part of the electrical system?

Answer 10

load

Question 11

The NEC requires emergency and standby systems to be kept entirely separate from all other wiring and equipment. Which NEC art?

Question 12

What do damper bars do?

Answer 12

damper windings provide stable parallel operation, reduce damping current loses, and limit the increase of third harmonic voltage with increase load.

Question 13

what is field excitation?

Answer 13

when a dc voltage is applied to the field windings of a dc generator, current flows through the windings and sets up a steady magnetic field.

Question 14

characteristic of a series wound generator?

Answer 14

the output voltage varies with the load current. Not used much

Question 15

characteristic of a shunt wound generator?

Answer 15

the output voltage varies inversely with load current.

Question 16

characteristic of a compound wound generator?

Answer 16

provides a constant output voltage under varying load conditions.

Question 17

The noise levels of generators sized from 5 kW to 200 kW range from 77 dBa to ___ dBa
(adjusted decibels) at 25 feet.

Answer 17

93 dBa

Question 18

single/double hearing protection required?

Answer 18

84 and 104

Question 19

generators should not be closer than ___ Feet to a load because of noise, fire, and air circulation.

Answer 19

25

Question 20

Generator should not be operated while inclined more than ___ degrees from level.

Answer 20

15

Question 21

The changeover board assembly is equipped with

a voltage change board to facilitate conversion to 120/208 or _____ generator output voltage.

Answer 21

240/416

Question 22

In parallel, the output is? (Changeover board)

Answer 22

120/208

Question 23

In Series, the output is? (Changeover board)

Answer 23

240/416

Question 24

It is imperative to solidly ground all electrical generators operating at?

Answer 24

600 volts or less.

Question 25

A ground rod has to have a minimum diameter of ___ inch if solid and ___ inch if pipe, and it has to be driven to a minimum of 8 feet.

Answer 25

5/8 3/4

Question 26

if the conductor is too small to carry the current demanded by the load what will happen?

Answer 26

heat up and possibly cause cause a fire or open circuit.

Question 27

the duties assigned to the personnel on generator watch can be divided into three main categories?

Answer 27

1. operating the equipment 2. maintaining the equipment 3. keeping the daily operations log.

Question 28

what must you do before you start generator?

Answer 28

complete the prestart checklist in sequence.

Question 29

NATO slave receptacle?

Answer 29

used to jump start other pieces of equipment that has 24 vdc starting system.

Question 30

reconnection board reconfigurations?

Answer 30

120 to 208 for low wye | 240 to 416 forhigh wye

Question 31

Never hold the engine control switch in the start position longer than ____ seconds.

Answer 31

15

Question 32

what will happen if the generator doors wont close?

Answer 32

the generator is deadlined

Question 33

paralleling generators?

Answer 33

When the blinking slows to a rate of once per second or slower, close the main circuit breaker of the incoming set while the SYNCHRONIZING LIGHTS are dark. The phase sequence relates to the order in which the generator windings are connected