Test 3-3

Question 1

When lifting a transmission line timber with a helicopter, the spreader bar should be made of

Answer 1

Epoxy

Question 2

The voltage rating of rubber protective equipment is based on the thickness of the material. Plastic protective devices are thinner and provide protection because of ____

Answer 2

an air space between the conductive object and the cover

Question 3

When performing live-line hot sticks work on transmission lines the clear hot stick distance is ____

Answer 3

equal to the minimum approach distance found in table R-6

Question 4

The climbing ladders used on aesthetic tower____

Answer 4

have step bolt on alternate side of center rail

Question 5

A wire tong and lever lift have been attached to support the weight of a conductor of a 138 kv line.
The tension will be held by a ____ rigged near the pole top

Answer 5

strain link stick and rope blocks

Question 6

A 1-1/4 inch A.B. Chance strain link stick is designed for a maximum tensile working load of 3,500 pounds. A similar stick with a 1-1/2 inch diameter has a (n) _____ pound tensile strength working load

Answer 6

6,500

Question 7

Of the two practical hot stick methods used to replace a pin insulator on a single-phase line, the ____ method requires only one wire tong.

Answer 7

lift

Question 8

For replacing a damaged pole, the ____ method is preferred by many electric workers,since fewer tools are required, and time can be saved

Answer 8

leaning pole

Question 9

When replacing insulators on a vertical 138kv angle structure from the pole, the 1-1/4 inch strain links sticks have a rating of 3,500 pounds each. If 1-1/2 inch strain links are used, the tension rating is increased ___ each

Answer 9

to 6,500

Question 10

The job is the replacement the crossarm on a 230 kv H structure fitted with x braces.To provide the proper clearance for hoisting the timbers, the center phase is lowered. The X braces_____

Answer 10

must be completely removed

Question 11

Regarding the use of a rural strain carrier, which one of the following statements is true.

Answer 11

This wooden device although made obsolete by modern equipment, is still suitable for live line work if properly maintained

Question 12

When performing rubber glove work from a rated bucket truck_____

Answer 12

a worker is never totally dependent on rubber gloves ; a second line of defense is essential

Question 13

When conditions permit, the first step in a single-phase hot sick pin insulator replacement job is to ____

Answer 13

disengage the neutral

Question 14

To replace insulator on an outside conductor of a 500 kv line, contact of the bull rope with the conductor must be avoided. The disconnected insulator string is moved to the tower body and then lowered. The _____ method uses a rubber wheel and a suspension insulator tool

Answer 14

Trolley pole

Question 15

A current transformer sends reduced current to a transformer-rated meter that is typically designed to operate at a maximum of ____

Answer 15

5

Question 16

Regarding the use of a two-pole distribution strain carrier, which of the following statements is true

Answer 16

It is unsuitable for use on lines with voltages in excess of 36kv

Question 17

Until the 1960s, the wooden hot sticks manufactured by A.B. Chance Company were made of selected grades of ___

Answer 17

sitka spruce

Question 18

A potential transformer has a ratio of 20:1 and supplies 120 volts to the meter. The primary voltage of this transformer is _____ volts.

Answer 18

2,400

Question 19

When changing insulators on a 138 kv energized line,ropes must be kept at least ____ from the conductor

Answer 19

3’7”