Electrical Concepts Quizs

Meter used in an electrical installation for recording the energy used?

• A kilowatt hour meter

• A voltmeter

• An ammeter

• A power factor meter

Makes use of the magnetic effect of an electric current?

• Electric doorbell

• Electric fan

• Electric heater

• Electric toothbrush

Does NOT conduct electricity?

• Glass

• Copper

• Aluminum

• Iron

Maximum current drawn by a cooker with 4 x 1.5 kW hot plates, a 2 kW grill, and a 3.5 kW oven supplied from a 230 V AC supply

• 30A

• 40A

• 50A

• 60A

Not an expression of 1 micrometer

• 1000000m

• 0.001m

• 1e-6m

• 1000mm

Quantity symbol for Impedance?

• Z

• R

• X

• Y

Magnetic effect of an electric current is put to use in a

• Transformer

• Inductor

• Solenoid

• Capacitor

Total resistance of a series circuit consisting of three resistors with values of 100Ω, 250Ω, and 350Ω

• 600Ω

• 700Ω

• 800Ω

• 750Ω

EMF, pd, and voltage are measured using the same unit.

• watts

• ohms

• volts

• amperes

Calculate the resistance of a resistor which absorbs 5000W when a current of 15A passes through it.

• 10 Ω

• 15 Ω

• 22.22 Ω

• 30 Ω