Why a starter is used for a motor?
Answer Posted / mani
if the motor stating torque is low then starter is used to start the motor
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We have a couple of oil tanks at our plant. One of them does not have a lightning arrester installed. My question is it necessary to install an arrestor on every tank or will this particular one be covered by the arrestor installed on the ajdacent tank, Since all the tanks are close to each other. Basically, I want to know that if these arrestors or protection works in a parituclar area of effect or influence. Thanks
is this the formula of building wiring to get the main breaker.Watts/volts*.8%+higher motor*(25%)=ampere. yes or no or send the correct formula for building wiring.
what about the power of wattmeter at starting and loding?
The windings of a transformer are divided into several coils, because?
Where is servomechanism used?
aternator every parts and its working
Hello Guys !! i want to rrb section engineer electrical(signal) previous model papers? any body help me?
any one can explain the stages of a knee point which is taken during ct magnetising curve.
what parameters should we check to reduce the power bill
what is the difference between Power and Distribution transformers ?
How out of step protection relay works?
Pls explan the OLR setting in VCB at HT yard
How capacitor improves pf
What will happen if we introduce negative feedback to a control system that uses a positive feedback?
A 400 V, 50 Hz, Δ connected synchronous generator has a field reactance of 0.1 Ω and armature resistance of 0.015 Ω. At full load, the machine supplies 1200 A at 0.8 pf lagging. Under full-load conditions, the friction and windage losses are 40 KW and the core losses are 30 KW. What is the machine’s overall efficiency? Ignore any field circuit losses.