1–2 LINEMAN TEST — PRACTICE QUESTIONS & WELL VERIFIED ANSWER..S WITH EVERY TOPIC SECTION 1 — BASIC ELECTRICAL THEORY 1. What is the basic unit used to measure electrical current? A. Volt B. Ohm C. Ampere D. Watt Answer..: C — Ampere 2.

1–2 LINEMAN TEST — PRACTICE QUESTIONS &
WELL VERIFIED ANSWER..S WITH EVERY TOPIC
SECTION 1 — BASIC ELECTRICAL THEORY

1. What is the basic unit used to measure electrical current?

A. Volt

B. Ohm

C. Ampere

D. Watt



Answer..: C — Ampere


2. Which formula represents Ohm's Law?

A. P = VI

B. V = IR

C. I = PR

D. R = PI



Answer..: B — V = IR


3. A circuit has 120 volts and 20 ohms of resistance. What is the current?



A. 2 A

B. 4 A

,C. 6 A

D. 12 A



Answer..: C — 6 A


Calculation:

I=V÷R

I = 120 ÷ 20 = 6 A



4. What is electrical power measured in?

A. Ohms

B. Amperes

C. Watts

D. Volts



Answer..: C — Watts


5. Which material is commonly used as an electrical conductor?

A. Rubber

B. Glass

C. Copper

D. Wood



Answer..: C — Copper


6. What is the primary purpose of insulation on a conductor?

, A. Increase current

B. Prevent unwanted current flow and contact

C. Increase voltage

D. Reduce conductor size



Answer..: B


7. What happens to current when resistance increases while voltage remains constant?



A. Current increases

B. Current decreases

C. Current becomes zero

D. Voltage increases



Answer..: B — Current decreases


8. What is a transformer primarily used to do?



A. Store electricity

B. Change AC voltage levels

C. Produce gasoline

D. Measure resistance



Answer..: B


9. A transformer that reduces voltage is called a: