THE LINEMAN'S AND CABLEMANS
HANDBOOK EXAM QUESTIONS WITH
CORRECT SOLUTIONS||100%
GUARANTEED PASS|| ALREADY A+
GRADED|||UPDATED 2026/2027
SYLLABUS||<<RECENT VERSION>>
1. Draw a schematic diagram of a single-phase distribution transformer connected
to a primary circuit and a load through a switch, and describe its operation without
load and with the switch closed and the load connected. - ANSWER ✓ Chap. 15,
p. 355
2. How is the capacity of a distribution transformer determined? - ANSWER ✓
Amount of current it can carry continuously at rated voltage without exceeding
design temperature.
3. Draw a schematic diagram of a distribution transformer secondary winding
connected for 120-volt two-wire operation and 120/240-volt three-wire operation. -
ANSWER ✓ Chap. 15, pp. 359-360
4. How can the polarity of a transformer be determined? - ANSWER ✓
5. Why are some distribution transformers manufactured with taps on the primary
windings? - ANSWER ✓ To provide variations in the number of winding turns in
steps of 2 1/2 percent of the rated voltage.
6. Describe the theory of operation of an elementary lightning arrester. -
ANSWER ✓ The arrester is nonconducting when the system is operating normally
when a over voltage happens the arrester sends diverts over voltage to the ground.
7. Describe the operation of a metal-oxide valve-type lightning arrester. -
ANSWER ✓ When surges occur the gaps spark over leaving only the MOVs in
the circuit.
,8. What is the basic insulation level of a 15-kV system? - ANSWER ✓ 95 (BIL)
9. What is the purpose of installing a fuse in a circuit? - ANSWER ✓ To protect
the electrical system or source from interruption or damage when a short circuit or
overlaps occurs beyond the fuse.
10. Describe the operation of an expulsion fuse cutout. - ANSWER ✓ The arc
from the fault current eroding the tube of the fuse holder. Producing a gas that blast
the arc out through the fuse vents.
11. How do you know when the fuse in an indicating enclosed cutout is blown? -
ANSWER ✓ The melting fusible element will cause the door to drop open and
signal blown fuse.
12. Refer to the time-current curve (Fig. 17.17) and determine the minimum
clearing time for a 15K fuse link if 100 amps of current flowed through the fuse
link. - ANSWER ✓ Chap. 17, pp. 408-409
13. Describe the operation of a solid-material fuse. - ANSWER ✓ Chap. 17, pp.
414
14. Describe the operation of a current-limiting fuse. - ANSWER ✓ Chap. 17, p.
415
15. What is likely to happen if a disconnect switch is opened while current is
flowing through the switch? - ANSWER ✓ Chap. 18, p. 434
16. Describe the operation of an oil circuit recloser. - ANSWER ✓ Chap. 18, p.
436
17. What is the purpose of using a voltage regulator in a distribution circuit? -
ANSWER ✓ Chap. 19, p. 443
18. Describe the operation of a distribution step voltage regulator. - ANSWER ✓
Chap. 19, p. 444
, 19. Why must the voltage regulator be in the neutral position to operate a voltage
regulator bypass switch with the circuit energized? - ANSWER ✓ Chap. 19, p.
451
20. What is the order of operations for transmission-line tower erection? -
ANSWER ✓ Chap. 20, p. 453
21. Why must the surface of high-voltage transmission-line conductors be
protected from scratches while they are being installed? - ANSWER ✓ Chap. 21,
p. 465
22. Why is it necessary to effectively ground conductors while they are being
installed? - ANSWER ✓ Chap. 21, p. 466
23. Describe the procedures to be followed to reconductor distribution lines. -
ANSWER ✓ Chap. 21, p. 470
24. When should conductors be sagged? - ANSWER ✓ Chap. 22, p. 475
25. Describe how a lineman can use a transit to complete sagging operations. -
ANSWER ✓ Chap. 22, p. 478
26. Why are armor rods installed on some line conductors at the point of support?
- ANSWER ✓ Chap. 22, p. 494
27. Why are spacers installed on bundled-conductor transmission lines? -
ANSWER ✓ Chap. 22, p. 496
28. What types of splices can be used on line conductors under tension? -
ANSWER ✓ 497 Chap. 23,
29. When can bolted connectors be used to join line conductors? - ANSWER ✓
Chap. 23, p. 517
30. What types of work can be completed to maintain lines while energized with
hot-line tools? - ANSWER ✓ Chap. 24, p. 519
91. Describe the hot-line tool called a wire tong. - ANSWER ✓ Chap. 24, p. 522
HANDBOOK EXAM QUESTIONS WITH
CORRECT SOLUTIONS||100%
GUARANTEED PASS|| ALREADY A+
GRADED|||UPDATED 2026/2027
SYLLABUS||<<RECENT VERSION>>
1. Draw a schematic diagram of a single-phase distribution transformer connected
to a primary circuit and a load through a switch, and describe its operation without
load and with the switch closed and the load connected. - ANSWER ✓ Chap. 15,
p. 355
2. How is the capacity of a distribution transformer determined? - ANSWER ✓
Amount of current it can carry continuously at rated voltage without exceeding
design temperature.
3. Draw a schematic diagram of a distribution transformer secondary winding
connected for 120-volt two-wire operation and 120/240-volt three-wire operation. -
ANSWER ✓ Chap. 15, pp. 359-360
4. How can the polarity of a transformer be determined? - ANSWER ✓
5. Why are some distribution transformers manufactured with taps on the primary
windings? - ANSWER ✓ To provide variations in the number of winding turns in
steps of 2 1/2 percent of the rated voltage.
6. Describe the theory of operation of an elementary lightning arrester. -
ANSWER ✓ The arrester is nonconducting when the system is operating normally
when a over voltage happens the arrester sends diverts over voltage to the ground.
7. Describe the operation of a metal-oxide valve-type lightning arrester. -
ANSWER ✓ When surges occur the gaps spark over leaving only the MOVs in
the circuit.
,8. What is the basic insulation level of a 15-kV system? - ANSWER ✓ 95 (BIL)
9. What is the purpose of installing a fuse in a circuit? - ANSWER ✓ To protect
the electrical system or source from interruption or damage when a short circuit or
overlaps occurs beyond the fuse.
10. Describe the operation of an expulsion fuse cutout. - ANSWER ✓ The arc
from the fault current eroding the tube of the fuse holder. Producing a gas that blast
the arc out through the fuse vents.
11. How do you know when the fuse in an indicating enclosed cutout is blown? -
ANSWER ✓ The melting fusible element will cause the door to drop open and
signal blown fuse.
12. Refer to the time-current curve (Fig. 17.17) and determine the minimum
clearing time for a 15K fuse link if 100 amps of current flowed through the fuse
link. - ANSWER ✓ Chap. 17, pp. 408-409
13. Describe the operation of a solid-material fuse. - ANSWER ✓ Chap. 17, pp.
414
14. Describe the operation of a current-limiting fuse. - ANSWER ✓ Chap. 17, p.
415
15. What is likely to happen if a disconnect switch is opened while current is
flowing through the switch? - ANSWER ✓ Chap. 18, p. 434
16. Describe the operation of an oil circuit recloser. - ANSWER ✓ Chap. 18, p.
436
17. What is the purpose of using a voltage regulator in a distribution circuit? -
ANSWER ✓ Chap. 19, p. 443
18. Describe the operation of a distribution step voltage regulator. - ANSWER ✓
Chap. 19, p. 444
, 19. Why must the voltage regulator be in the neutral position to operate a voltage
regulator bypass switch with the circuit energized? - ANSWER ✓ Chap. 19, p.
451
20. What is the order of operations for transmission-line tower erection? -
ANSWER ✓ Chap. 20, p. 453
21. Why must the surface of high-voltage transmission-line conductors be
protected from scratches while they are being installed? - ANSWER ✓ Chap. 21,
p. 465
22. Why is it necessary to effectively ground conductors while they are being
installed? - ANSWER ✓ Chap. 21, p. 466
23. Describe the procedures to be followed to reconductor distribution lines. -
ANSWER ✓ Chap. 21, p. 470
24. When should conductors be sagged? - ANSWER ✓ Chap. 22, p. 475
25. Describe how a lineman can use a transit to complete sagging operations. -
ANSWER ✓ Chap. 22, p. 478
26. Why are armor rods installed on some line conductors at the point of support?
- ANSWER ✓ Chap. 22, p. 494
27. Why are spacers installed on bundled-conductor transmission lines? -
ANSWER ✓ Chap. 22, p. 496
28. What types of splices can be used on line conductors under tension? -
ANSWER ✓ 497 Chap. 23,
29. When can bolted connectors be used to join line conductors? - ANSWER ✓
Chap. 23, p. 517
30. What types of work can be completed to maintain lines while energized with
hot-line tools? - ANSWER ✓ Chap. 24, p. 519
91. Describe the hot-line tool called a wire tong. - ANSWER ✓ Chap. 24, p. 522
