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The condition for maximum power in case of D.C. motor is?

Recent questions tagged permanent

1 answer 13 views

Name the material used for :- (i) Moving coil (ii) Permanent magnet in PMMC instrument.

asked Sep 6, 2018 by Shimroz123
1 answer 7 views

What is permanent magnet and electromagnet?

asked Sep 4, 2018 by Shimroz123
2 answers 13 views
1 answer 14 views

A neodymium magnet is a permanent magnet made from an alloy of _________ A) Neodymium and iron B) Neodymium, iron and iodine C) Neodymium and boron D) Neodymium, iron and boron

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
1 answer 27 views

When the voltage across a battery is measured using a D.C potentiometer, the reading shows 1.08 V. But when the same voltage is measured using a Permanent Magnet Moving Coil (PMMC) voltmeter, the voltmeter reading shows 0.99 V. If the resistance of the voltmeter is 1100 Ohm , the internal resistance of the battery, in Ohm , is (A) 150 (B) 100 (C) 50 (D) 200

asked Apr 26, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 22 views

Hard steel is suitable for making permanent magnets because?

asked Mar 25, 2018 in Electrical Engineering by Shimroz123
1 answer 279 views

Those materials are well suited for making permanent magnets which have _____ retentivity and _______ coercivity.

asked Mar 25, 2018 in Electrical Engineering by Shimroz123
1 answer 28 views

Permanent magnets are normally made of?

asked Mar 25, 2018 in Electrical Engineering by Shimroz123
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