EIAT and NEIEP Test Trade Math and Measurements 2

Question 1

A 120V circuit draws 15A. How many watts of power is being consumed?

Accepted Answer

1800W

Answer

Power = Voltage × Current = 120V × 15A = 1,800 watts.

Question 2

How many inches are in 7 feet 6 inches?

Accepted Answer

90 inches

Answer

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:

Accepted Answer

1.414

Answer

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)

Accepted Answer

5,595W

Answer

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?

Accepted Answer

5.71Ω

Answer

1/R = 1/10 + 1/20 + 1/40 = 4/40 + 2/40 + 1/40 = 7/40, so R = 40/7 ≈ 5.71Ω.

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