Search found 1103 matches

by himanshu1234
Tue Aug 13, 2019 12:21 pm
Forum: Electrical Devices
Topic: What is Automatic Voltage regulator(AVR)?
Replies: 0
Views: 142

What is Automatic Voltage regulator(AVR)?

AVR is an abbreviation for Automatic Voltage Regulator.It is important part in Synchronous Generators, it controls theoutput voltage of the generator by controlling its excitation current. Thus it can control the output Reactive Power of the Generator.
by himanshu1234
Tue Aug 13, 2019 12:21 pm
Forum: Electrical Devices
Topic: Difference between a four point starter and three point starter?
Replies: 0
Views: 148

Difference between a four point starter and three point starter?

The shunt connection in four point stater is provided separately form the line where as in three point stater it is connected with line which is the drawback in three point stater
by himanshu1234
Tue Aug 13, 2019 12:20 pm
Forum: Electrical Devices
Topic: Why the capacitors works on ac only?
Replies: 0
Views: 129

Why the capacitors works on ac only?

Generally capacitor gives infinite resistance to dc components(i.e., block the dc components). it allows the ac components to pass through.
by himanshu1234
Tue Aug 13, 2019 12:20 pm
Forum: Electrical Devices
Topic: . What is the principle of motor?
Replies: 0
Views: 141

. What is the principle of motor?

Whenever a current carrying conductor is placed in an magnetic field it produce turning or twisting movement is called as torque.
by himanshu1234
Tue Aug 13, 2019 12:19 pm
Forum: Electrical Devices
Topic: What is meant by armature reaction?
Replies: 0
Views: 148

What is meant by armature reaction?

The effect of armature flu to main flux is called armature reaction. The armature flux may support main flux or opposes main flux.
by himanshu1234
Tue Aug 13, 2019 12:18 pm
Forum: Electrical Devices
Topic: What is meant by armature reaction?
Replies: 0
Views: 138

What is meant by armature reaction?

The effect of armature flu to main flux is called armature reaction. The armature flux may support main flux or opposes main flux.
by himanshu1234
Tue Aug 13, 2019 12:18 pm
Forum: Electrical Devices
Topic: what is a stepper motor? What are its uses?
Replies: 0
Views: 131

what is a stepper motor? What are its uses?

Stepper motor is the electrical machine which acts upon input pulse applied to it. it is one type of synchronous motor which runs in steps in either direction instead of running in a complete cycle. so, in automation parts, it is used.
by himanshu1234
Tue Aug 13, 2019 12:18 pm
Forum: Electrical Devices
Topic: What is the difference between synchronous generator & asynchronous generator?
Replies: 0
Views: 127

What is the difference between synchronous generator & asynchronous generator?

In simple, synchronous generator supply's both active and reactive power but asynchronous generator(induction generator) supply's only active power and observe reactive power for magnetizing.This type of generators are used in windmills.
by himanshu1234
Tue Aug 13, 2019 12:17 pm
Forum: Electrical Devices
Topic: Why are transformer ratings in kva?
Replies: 0
Views: 141

Why are transformer ratings in kva?

Since the power factor of the transformer is dependent on load we only define VA rating and does not include power factor. In case of motors, power factor depends on construction and hence the rating of motors is in K Watts and include power factor.
by himanshu1234
Tue Aug 13, 2019 12:17 pm
Forum: Electrical Devices
Topic: Whats is MARX CIRCUIT?
Replies: 0
Views: 104

Whats is MARX CIRCUIT?

It is used with generators for charging a number of capacitor in parallel and discharging them in series.It is used when voltage required for testing is higher than the available.