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Test: Magnetic Effects of Electric Current - 1 - UPSC MCQ


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10 Questions MCQ Test Science & Technology for UPSC CSE - Test: Magnetic Effects of Electric Current - 1

Test: Magnetic Effects of Electric Current - 1 for UPSC 2024 is part of Science & Technology for UPSC CSE preparation. The Test: Magnetic Effects of Electric Current - 1 questions and answers have been prepared according to the UPSC exam syllabus.The Test: Magnetic Effects of Electric Current - 1 MCQs are made for UPSC 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Magnetic Effects of Electric Current - 1 below.
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Test: Magnetic Effects of Electric Current - 1 - Question 1

An electric motor converts

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An electric motor converts electrical energy into mechanical energy.

Test: Magnetic Effects of Electric Current - 1 - Question 2

Overloading is due to

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Overloading occurs when there is any fault in the appliances or the insulation of wire got damaged. It also occurs when there is sudden hike in supply voltage.

Test: Magnetic Effects of Electric Current - 1 - Question 3

In Fleming’s left-hand rule the thumb indicates the direction of

Detailed Solution for Test: Magnetic Effects of Electric Current - 1 - Question 3

In Fleming’s left-hand rule the thumb indicates the direction of mechanical force acting on the conductor. The forefinger points in the direction of magnetic field and the central finger in the direction of current flowing in the conductor.

Test: Magnetic Effects of Electric Current - 1 - Question 4

Which among of these are the main characteristics of fuse element?

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Fuse wire must have high conductivity, low melting point and it do not burn due to oxidation. These characteristics of a fuse wire make it possible to prevent from damages.

Test: Magnetic Effects of Electric Current - 1 - Question 5

The phenomenon of electromagnetic induction is

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Electromagnetic induction is the phenomenon due to which an induced current is set up in a coil when magnetic field around it, is changed.

Test: Magnetic Effects of Electric Current - 1 - Question 6

The main advantage of A.C power transmission over D.C power transmission over long distance is

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AC transmit over a long distance without much loss of energy as compare to DC.

Test: Magnetic Effects of Electric Current - 1 - Question 7

The device used to produce an electric current in a circuit is called

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An electric generator is used to produce an electric current in a circuit.

Test: Magnetic Effects of Electric Current - 1 - Question 8

Earth wire carries

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A "groundingwire on the other hand is a safety wire that has intentionally been connected to earth. The grounding wire does not carry electricity under normal circuit operations. It's purpose is to carry electrical current only under short circuit or other conditions that would be potentially dangerous.

Test: Magnetic Effects of Electric Current - 1 - Question 9

The direction of induced current produced in a rectangular coil, when it is rotated in a uniform magnetic field, is given by

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Fleming’s right-hand rule gives the direction of induced current in a rectangular coil when the coil is rotated in a uniform magnetic field.

Test: Magnetic Effects of Electric Current - 1 - Question 10

If the current values periodically from zero to a maximum value, back to zero and then reverses its direction, the current is

Detailed Solution for Test: Magnetic Effects of Electric Current - 1 - Question 10

 If the current value changes from zero to a maximum value, back to zero and then reverse its direction, the current is called alternating current.  (SI) unit of magnetic field is the Tesla (T). 

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