EIAT Applied Electrical Calculations

Question 1

Using Ohm's Law, what is the current in a circuit with a voltage of 120 volts and a resistance of 24 ohms?

Accepted Answer

5 A

Answer

Ohm's Law: I = V ÷ R. Current = 120 ÷ 24 = 5 amperes. Ohm's Law relates voltage (V), current (I), and resistance (R) with the formula V = I × R.

Question 2

Two resistors of 8 ohms each are connected in series. What is the total resistance?

Accepted Answer

16 ohms

Answer

In a series circuit, resistances add directly: R_total = R1 + R2 = 8 + 8 = 16 ohms. Current must flow through each resistor in sequence, so their resistance values accumulate.

Question 3

An elevator motor operates at 240 volts and draws 20 amperes of current. What is its power consumption in watts?

Accepted Answer

4,800 watts

Answer

Power (P) = Voltage (V) × Current (I). P = 240 × 20 = 4,800 watts. Power is measured in watts and represents the rate at which electrical energy is consumed.

Question 4

A wire with a resistance of 2 ohms carries a current of 6 amperes. What is the voltage drop across the wire?

Accepted Answer

12 V

Answer

Using Ohm's Law: V = I × R = 6 × 2 = 12 volts. The voltage drop across the wire represents energy lost to resistance in that conductor.

Question 5

Two resistors of 6 ohms and 3 ohms are connected in parallel. What is the total resistance?

Accepted Answer

2 ohms

Answer

For parallel resistors: 1/R_total = 1/R1 + 1/R2 = 1/6 + 1/3 = 1/6 + 2/6 = 3/6 = 1/2. Therefore R_total = 2 ohms. Parallel circuits provide multiple current paths, reducing total resistance.

EIAT - Elevator Industry Aptitude Test Practice Test

EIAT - Elevator Industry Aptitude Test Practice Test

EIAT Applied Electrical Calculations