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Question 1

The difference between no-load voltage and full-load voltage, expressed as the percentage of full-load voltage, is called ?

Answer 1

Voltage regulation

Question 2

Improving the power factor in a circuit reduces the amount of ? or current needed to supply the load.

Answer 2

Apparent power

Question 3

The extent of the voltage drop depends on?

Answer 3

on how the current flow is impeded.

Question 4

A piece of equipment that improves the power factor, reduces the reactance on the line, reduces the current, and improves the voltage is a(n) ? .

Answer 4

Capacitor

Question 5

One way to reduce the capacitive reactance caused by the parallel conductors on very long transmission lines is to install ? .

Answer 5

Reactors

Question 6

The leads going in and out of a set of voltage regulators do not need to be the same size as the main line conductors.

Answer 6

True

Question 7

To improve the voltage on a feeder, it is usually more economical to install ? than to carry out a major improvement program such as stringing larger conductors.

Answer 7

Voltage regulators

Question 8

A recloser is most often set to trip out at ? times its rating.

Answer 8

2

Question 9

The part of a recloser that senses a fault is the ? .

Answer 9

Solenoid coil

Question 10

A(n) ? recloser has a cold-load pickup feature.

Answer 10

Electronic

Question 11

Sectionalizers are not designed to interrupt ? .

Answer 11

Fault current

Question 12

Type H reclosers contain coils that vary in size from five amperes to ? .

Answer 12

50a

Question 13

On type H reclosers, the fastest curve is the ? curve.

Answer 13

A

Question 14

The two types of faults that will cause a recloser to operate are

Answer 14

temporary and permanent.

Question 15

Type L reclosers vary in size from ? to ? .

Answer 15

25A/280a

Question 16

Most utilities and operating companies have standards of operation for their reclosers, setting them at ? fast operations and ? slow operations.

Answer 16

2 fast 2 slow

Question 17

Single-phase reclosers are of the ? type and the ? type.

Answer 17

H/ L

Question 18

In order for a single-phase recloser to be set to operate only once instead going through its normal operating cycle, the non-reclosing handle must be ? .

Answer 18

In the down position

Question 19

The recloser mechanism on a type H or type L recloser is attached to the ? of the unit.

Answer 19

Top

Question 20

Type D reclosers vary in size from ? to ? .

Answer 20

100 A / 560 A Correct

Question 21

The type ? recloser is a type of single-phase recloser that requires a closing coil to close its main contact.

Answer 21

D

Question 22

When a fault occurs on a line protected by a type ? recloser, the slow operations allow current to flow for five or six cycles in order to allow a fuse downstream of the recloser to open.

Answer 22

H

Question 23

A sectionalizer locks open during the interval when the back-up device is ?

Answer 23

Open