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Basic Electrical Information MCQs - Electrical Engineering

We shared the basic electricity objective questions and answers for electrical and electronic engineers. Electrical Engineering MCQs.

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Question 1: When electric current passes through a bucket full of water, lot of bubbling is observed. This suggests that the type of supply is ?

• none of the above
• AC
• DC
• any of above two

Question 2: With three resistances connected in I parallel, if each dissipates ,20 W the total power supplied by the voltage source equals ?

• 60W
• 10W
• 40W
• 20W

Question 3: If a parallel circuit is opened in the main line, the current ?

• is zero in the highest resistive branch
• is zero in the highest resistive branch
• increases in each branch
• is zero in all branches
• Answers: is zero in all branches

Question 4: Which is the best conductor of electricity ?

• Carbon
• Silver
• Iron
• Copper

Question 5: Which one of the following does not have negative temperature coefficient ?

• Mica
• Paper
• Aluminium
• Rubber

Question 6: One commercial unit of energy equals ?

• ten kilowatt-hour
• One watt-hour
• 600 watt-seconds
• One kilowatt-hour

Question 7: The flow of current in solids is due to ?

• nucleus
• electrons
• electrons and ions
• atoms

Question 8: The substances which have a large number of free electrons and offer a low resistance are called ?

• insulators
• semi-conductors
• conductors
• inductors

Question 9: Out of the following which is not a poor conductor ?

• Copper
• Tungsten
• Carbon
• Cast iron

Question 10: A sine wave voltage is applied across an inductor. When the frequency of the voltage is decreased, the current:

• Momentarily goes to zero
• Does not Chamge
• Is decreased
• Is Increased

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