EIAT and NEIEP Test Trade Math and Measurements 2 — Questions and Answers
Question 1: A 120V circuit draws 15A. How many watts of power is being consumed?
- 800W
- 1200W
- 1800W (Correct answer)
- 2400W
Correct answer: 1800W
Power = Voltage × Current = 120V × 15A = 1,800 watts.
Question 2: How many inches are in 7 feet 6 inches?
- 76 inches
- 84 inches
- 90 inches (Correct answer)
- 96 inches
Correct answer: 90 inches
7 feet × 12 in/ft = 84 inches, plus 6 inches = 90 inches total.
Question 3: The multiplier for a 45° offset in conduit bending is approximately:
- 1.0
- 1.155
- 1.414 (Correct answer)
- 1.732
Correct answer: 1.414
The multiplier for a 45° conduit offset is approximately 1.414 (the square root of 2), used to calculate the distance between bends.
Question 4: If a motor nameplate lists 7.5 HP, approximately how many watts is this? (1 HP ≈ 746 W)
- 5,220W
- 5,595W (Correct answer)
- 5,845W
- 6,100W
Correct answer: 5,595W
7.5 HP × 746 W/HP = 5,595 watts.
Question 5: A circuit has three resistors in parallel: 10Ω, 20Ω, and 40Ω. What is the equivalent resistance?
- 5Ω
- 5.71Ω (Correct answer)
- 70Ω
- 8Ω
Correct answer: 5.71Ω
1/R = 1/10 + 1/20 + 1/40 = 4/40 + 2/40 + 1/40 = 7/40, so R = 40/7 ≈ 5.71Ω.
Question 6: A 240V, 30A circuit has a load of 5,760W. What is the power factor?
- 0.60
- 0.70
- 0.80 (Correct answer)
- 1.00
Correct answer: 0.80
PF = True Power / Apparent Power = 5,760W / (240V × 30A) = 5,760 / 7,200 = 0.80.
EIAT and NEIEP Test Trade Math and Measurements 2
A 120V circuit draws 15A.
How many watts of power is being consumed?