ITI Electrician

Which device is used to measure electrical current?

• Voltmeter

• Ammeter

• Ohmmeter

• Wattmeter

What is the unit of electrical resistance?

• Ohm

• Ampere

• Volt

• Watt

Which component is used to convert AC to DC?

• Capacitor

• Inductor

• Rectifier

• Transformer

What is the purpose of earthing in electrical installations?

• To prevent shock

• To save energy

• To increase voltage

• To step down current

In an AC circuit, what does the term 'power factor' refer to?

• Ratio of true power to apparent power

• Ratio of apparent power to true power

• Ratio of voltage to current

• Ratio of current to voltage

Which of the following is an insulator?

• Copper

• Aluminum

• Glass

• Iron

What does a transformer do?

• Converts DC to AC

• Steps up or steps down voltage

• Stores electrical energy

• Converts electrical energy to mechanical energy

What is the formula for electrical power?

• P = VI

• P = IR

• P = V/R

• P = V^2/R

What is the main purpose of a fuse in an electrical circuit?

• To store energy

• To protect the circuit from overload

• To step down voltage

• To rectify AC to DC

Which law states that the total voltage around a closed circuit is equal to the sum of voltage drops within the same circuit?

• Ohm's Law

• Kirchhoff's Voltage Law

• Faraday's Law

• Coulomb's Law