MO-VALLEY TEST 1-4 STUDY GUIDE
2025/2026 COMPLETE QUESTIONS
WITH VERIFIED CORRECT ANSWERS ||
100% GUARANTEED PASS
<NEWEST VERSION>
1. A circuit is defined as a completed path for voltage to flow from a source of
voltage through a load and back to the source.
T/F - ANSWER ✔ False
2. A complete circuit or path is often referred to as a(n) ? circuit.
a.closed
b.infinite
c.open
d.short - ANSWER ✔ a.closed
3. Double arms are typically used to handle heavy weights, corners, and ? .
a.deadends
b.equipment stations
c.jumpers
d.V phase lines - ANSWER ✔ a.deadends
4. Steel pins have lead threads to prevent ? on the insulator.
a.creeping
b.grounding
c.localized pressure
d.uplift - ANSWER ✔ c.localized pressure
,5. A lag screw should be driven in with a hammer to about ? from the tight
position, and then seated with three or four turns with a wrench.
a.1/4"
b.1"
c.2"
d.2 1/2" - ANSWER ✔ a.1/4"
6. The groundman should stand well to the side when pulling up material to a
worker on the pole.
T/F - ANSWER ✔ True
7. Each disk of a porcelain or glass suspension insulator is rated at ? .
a.6 kV
b.11 kV
c.15 kV
d.18 kV - ANSWER ✔ b.11 kV
8. One piece porcelain pin-type insulators are used on lines where the voltages
are less than ? .
a.23 kV
b.32 kV
c.45 kV
d.69 kV - ANSWER ✔ a.23 kV
9. The diameter of suspension porcelain insulator disks varies from 3 3/8 to ? .
a.8 1/2"
b.10"
c.11 1/2"
d.12" - ANSWER ✔ c.11 1/2"
, 10.When hoisting a long string of insulators, care should be taken not to ?
because it can damage the ball, socket, and cotter keys.
a.excessively bend the string
b.send up the entire string
c.split the string
d.tie the rope to the insulators - ANSWER ✔ a.excessively bend the string
11.Three materials used for overhead line insulators are porcelain, polymer, and
?.
a.fiberglass
b.glass
c.glass-lined wood
d.nylon-reinforced plastic - ANSWER ✔ b.glass
12.If three phases and a neutral are mounted on a crossarm, the neutral can be
identified as it is the one mounted on a ? insulator.
a.ceramic
b.glass
c.polymer
d.porcelain blend - ANSWER ✔ b.glass
13.The glaze on a porcelain insulator helps the insulator's surface shed dirt and
bead water.
T/F - ANSWER ✔ True
14.Pin-type insulators can be two or more pieces cemented together.
T/F - ANSWER ✔ True
15.A porcelain suspension insulator uses a ball-and-socket design which puts
the insulating material under ? to create strength.
a.compression
2025/2026 COMPLETE QUESTIONS
WITH VERIFIED CORRECT ANSWERS ||
100% GUARANTEED PASS
<NEWEST VERSION>
1. A circuit is defined as a completed path for voltage to flow from a source of
voltage through a load and back to the source.
T/F - ANSWER ✔ False
2. A complete circuit or path is often referred to as a(n) ? circuit.
a.closed
b.infinite
c.open
d.short - ANSWER ✔ a.closed
3. Double arms are typically used to handle heavy weights, corners, and ? .
a.deadends
b.equipment stations
c.jumpers
d.V phase lines - ANSWER ✔ a.deadends
4. Steel pins have lead threads to prevent ? on the insulator.
a.creeping
b.grounding
c.localized pressure
d.uplift - ANSWER ✔ c.localized pressure
,5. A lag screw should be driven in with a hammer to about ? from the tight
position, and then seated with three or four turns with a wrench.
a.1/4"
b.1"
c.2"
d.2 1/2" - ANSWER ✔ a.1/4"
6. The groundman should stand well to the side when pulling up material to a
worker on the pole.
T/F - ANSWER ✔ True
7. Each disk of a porcelain or glass suspension insulator is rated at ? .
a.6 kV
b.11 kV
c.15 kV
d.18 kV - ANSWER ✔ b.11 kV
8. One piece porcelain pin-type insulators are used on lines where the voltages
are less than ? .
a.23 kV
b.32 kV
c.45 kV
d.69 kV - ANSWER ✔ a.23 kV
9. The diameter of suspension porcelain insulator disks varies from 3 3/8 to ? .
a.8 1/2"
b.10"
c.11 1/2"
d.12" - ANSWER ✔ c.11 1/2"
, 10.When hoisting a long string of insulators, care should be taken not to ?
because it can damage the ball, socket, and cotter keys.
a.excessively bend the string
b.send up the entire string
c.split the string
d.tie the rope to the insulators - ANSWER ✔ a.excessively bend the string
11.Three materials used for overhead line insulators are porcelain, polymer, and
?.
a.fiberglass
b.glass
c.glass-lined wood
d.nylon-reinforced plastic - ANSWER ✔ b.glass
12.If three phases and a neutral are mounted on a crossarm, the neutral can be
identified as it is the one mounted on a ? insulator.
a.ceramic
b.glass
c.polymer
d.porcelain blend - ANSWER ✔ b.glass
13.The glaze on a porcelain insulator helps the insulator's surface shed dirt and
bead water.
T/F - ANSWER ✔ True
14.Pin-type insulators can be two or more pieces cemented together.
T/F - ANSWER ✔ True
15.A porcelain suspension insulator uses a ball-and-socket design which puts
the insulating material under ? to create strength.
a.compression
