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Showing 1-9 of 24 results
What is an amplidyne

Amplidyne – Working and Application

  • Categories Electrical Machines, DC Generator

An amplidyne is an electromechanical amplifier with the characteristics of a rotating machine. It was invented prior to the second world war by Ernst Alexanderson. An amplidyne is a special-purpose …

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dc motor voltage and power equations

Voltage and Power Equations of DC Motor | Condition of Maximum Power

  • Categories Electrical Machines, Basic Electrical, DC Generator, DC Motor, Measurement

In this post, we will look at the voltage and power equation of a dc motor and the condition for maximum power in a dc motor. Voltage Equation of a …

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DC generator problem 1

5 DC Generator Problems with Solution – Part 1

  • Categories DC Generator, Interview Questions, Objective Questions

1. A shunt generator delivers 450 A at 230 V and the resistance of the shunt field and armature are 50 Ω and 0.03 Ω respectively. Calculate the generated e.m.f? …

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working principle of alternator

Working Principle of Alternator

  • Categories Alternator, DC Generator, Electrical Machines, Generation, Power System

The machine which produces 3 phase power from mechanical power is called an alternator or synchronous generator. The working of an alternator is based on the principle that when the flux …

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Swinburne’s Test

Swinburne’s Test of DC Machine (Generator and Motor)

  • Categories DC Generator, DC Motor, Electrical Machines, Instrumentation, Measurement

Swinburne’s test is the simplest indirect method of testing dc machines. In this method, the dc machine (generator or motor) is run as a motor at no-load and losses of …

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Testing a DC Motor

Testing of DC Machines (DC Motor and DC Generator)

  • Categories DC Generator, DC Motor, Electrical Machines

There are several tests that are conducted for testing a dc machine (generator or motor) to judge its performance. The most important performance tests to be conducted on the dc …

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Working of a DC motor

Back EMF and Its Significance in DC Motor

  • Categories DC Motor, DC Generator, Electrical Machines

What is Back EMF? When the armature of a DC motor rotates under the influence of the driving torque, the armature conductors move through the magnetic field and hence emf is induced …

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interpoles in dc generator

Compensating Windings and Interpoles in DC Machines

  • Categories DC Generator, DC Motor, Electrical Machines, Generation

Compensating Windings and Interpoles are one of the important step taken to minimize the undesirable effect of armature reaction in dc machines. Armature reaction causes many undesirable effects on a …

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Dc machine generator and motor construction

Advantages of Operating DC Generators in Parallel

  • Categories DC Generator

In a DC power plant, power is usually supplied from several generators of small ratings connected in parallel instead of from one large generator. This is due to the following …

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