Study: Electrical Engineering Fundamentals

help Question 1

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What is the difference between AC and DC current?

A AC alternates direction periodically, DC flows in one constant direction

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B AC is faster than DC

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C DC is more dangerous than AC

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D There is no difference

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help Question 2

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What does a transformer do?

A Converts AC to DC

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B Changes voltage levels while maintaining power (with losses)

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C Stores electrical energy

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D Measures electrical current

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help Question 3

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What is the purpose of a circuit breaker?

A To reduce voltage

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B To automatically interrupt current flow when a fault is detected

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C To increase current

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D To store energy

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help Question 4

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What does kVA stand for in electrical terms?

A Kilovolt-Ampere (apparent power)

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B Kilowatt-hour

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C Kilovolt-Acceleration

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D Kilowatt-Ampere

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help Question 5

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What is the function of a motor starter?

A To increase motor speed

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B To safely start and stop electric motors

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C To reduce motor noise

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D To convert AC to DC

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help Question 6

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What is power factor in electrical systems?

A The speed of electrical current

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B The ratio of real power to apparent power

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C The safety margin in circuits

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D The efficiency of motors

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help Question 7

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What is the purpose of grounding in electrical systems?

A To increase voltage

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B To provide a safe path for fault currents and protect personnel

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C To reduce power consumption

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D To improve circuit efficiency

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help Question 8

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What does RMS mean in electrical measurements?

A Real Motor Speed

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B Root Mean Square - effective value of AC voltage or current

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C Rated Maximum Speed

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D Resistance Measurement Standard

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help Question 9

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What is the difference between a generator and an alternator?

A Generator produces DC, alternator produces AC

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B Generator is smaller than alternator

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C Alternator is more efficient

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D There is no difference

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help Question 10

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What is electrical impedance?

A Same as electrical resistance

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B Total opposition to AC current flow (resistance + reactance)

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C The speed of electrical signals

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D The power consumption of devices

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quiz Electrical Engineering Fundamentals

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