Home
Class 12
PHYSICS
An electric motor operating on a 50 V dc...

An electric motor operating on a `50 V dc` supply draws a current of `12 A`. If the efficiency of the motor is `30 %`,estimate the resistance of the windings of the motor.

Text Solution

AI Generated Solution

To solve the problem step-by-step, let's break it down: ### Step 1: Calculate the Input Power The input power (P_input) can be calculated using the formula: \[ P_{\text{input}} = V \times I \] Where: ...
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • HEATING EFFECT OF CURRENT

    CENGAGE PHYSICS ENGLISH|Exercise Subjective|8 Videos
  • HEATING EFFECT OF CURRENT

    CENGAGE PHYSICS ENGLISH|Exercise Single Correct|60 Videos
  • HEATING EFFECT OF CURRENT

    CENGAGE PHYSICS ENGLISH|Exercise Solved Examples|13 Videos
  • GEOMETRICAL OPTICS

    CENGAGE PHYSICS ENGLISH|Exercise Integer Type|4 Videos
  • INDUCTANCE

    CENGAGE PHYSICS ENGLISH|Exercise Concept Based|8 Videos

Similar Questions

Explore conceptually related problems

An electric motor runs a D.C. source of e.m.f. 200 V and draws a current of 10A . If the efficiency is 40% , then ressistance of the armature is:

A motor operating on 120 V draws a current of 2 A . If the heat is developed in the motor at the rate of 9 cal s^(-1) , what is the efficiency?

A 220 V input is supplied to a transformer. The output circuit draws a current of 2 A at 440 V. If the efficiency of the transformer is 80%, the current drawn by the primary windings of the transformer is

A 220 V input is supplied to a transformer. The output circuit draws a current of 2.0 A at 440 V . If the efficiency of the transformer is 80% , the current drawn by the primery winding of the transformer is: (1.) 3.6A (2.) 2.8A (3.) 2.5A (4.) 5.0A

An electric motor is designed to work at 100 V and draws a current of 6 A . The output power supplied by the motor is 150 W , find the power remaining in the motor and its percentage efficiency?

The music system draws a current of 400 mA when connected to a 12 V battery. What is the resistance of the music system ?

An electric motor of power 3 kW is to be operated at mains of 220 V. Find the current rating of the fuse to be connected with the motor.

A 50 V battery is supplying current of 10 A when connected to a resistor. If the efficiency of the battery at this current is 25%, then the internal resistance of the battery is

An electric motor of power 100 W is used to drive the stirrer in a water bath. If 50% of the energy supplied to the motor is spent in stirring the water,calculate the work done on water in one minute.

A resistor and an inductor are connected to an ac supply of 120 V and 50 Hz, the current in the circuit is 3 A. If the power consumed in the circuit is 108 W, then the resistance in the circuit is