ICS Pre Test

What is the unit of electrical resistance?

• Ohm

• Volt

• Ampere

• Watt

Which type of sensor is used to measure pressure?

• Thermistor

• Piezoelectric sensor

• Pressure transducer

• LVDT (Linear Variable Differential Transformer)

Which instrument is used to measure electric current?

• Voltmeter

• Ammeter

• Ohmmeter

• Barometer

What is the unit of electrical capacitance?

• Farad

• Henry

• Ohm

• Volt

What is the primary purpose of a transformer in an electrical circuit?

• To convert AC to DC

• To increase or decrease voltage

• To store electrical energy

• To regulate current

What is a transducer?

• • A) A device that stores energy

• • B) A device that converts one form of energy to another

• • C) A device that amplifies signals

• • D) A device that measures temperature

Question: What is a digital signal?

• • A) A signal that varies continuously

• • B) A signal that has discrete levels

• • C) A signal used only in analog systems

• • D) A signal that is always sinusoidal

What is the speed of light in a vacuum?

• • A) 3×1063 \times 10^63×106 m/s

• • B) 3×1073 \times 10^73×107 m/s

• • C) 3×1083 \times 10^83×108 m/s

• • D) 3×1093 \times 10^93×109 m/s