Why syn. generators are used for the production of electricity?

Why syn. generators are used for the production of electricity?
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1 Answer

Answer :

A:synchronous machines have capability to work on different power factor. Hence syn. generators are used for the production of electricity.
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Related questions

Why syn. generators are used for the production of electricity?

Description : Why syn. generators are used for the production of electricity?

Last Answer : Synchronous machines have capability to work on different power factor (or say different imaginary power varying the field emf. Hence syn. generators re used for the production of electricity.

Why Syn. Generators Are Used For The Production Of Electricity?

Description : Why Syn. Generators Are Used For The Production Of Electricity?

Last Answer : Synchronous machines have capability to work on different power factor(or say different imaginary pow varying the field emf. Hence syn. generators are used for the production of electricity.

Why electricity in India is in the multiples of 11 like 11kv, 22kv, 33kv ?

Description : Why electricity in India is in the multiples of 11 like 11kv, 22kv, 33kv ?

Last Answer : A:Transformer Induced voltage equation contains 4.44 factor. E -Induced emf per phase T -number of turns f -frequency Φ -maximum flux per pole From the equation we see that E is proportional to 4.4 and it is in turn multiple of 11.So always transmission voltage is multiple of 11

What are the various types of tariff?

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Last Answer : 1. Simple tariff 2. Flat rate tariff 3. Block rate tariff 4. Two-part tariff 5. Maximum demand tariff 6. Power factor tariff 7. Three-part tariff

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Last Answer : The rate at which electrical energy is supplied to a consumer is known as tariff. The tariff should include the following items: (i) Recovery of cost of producing electrical energy at the power ... of cost of operation and maintenance of supply (iv) A suitable profit on the capital investment.

How can we reduce the effect of corona?

Description : How can we reduce the effect of corona?

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What is corona?

Description : What is corona?

Last Answer : The phenomenon of violet glow, hissing noise and production of ozone gas in an overhead transmission line is known as corona.

What is meant by Sag?

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What is difference between fuse and breaker?

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Last Answer : A:Dc series is in the trains to get high starting torque while starting of the trains and operating voltage is 1500v dc.

Why we use ac system in India why not dc ?

Description : Why we use ac system in India why not dc ?

Last Answer : A:Firstly, the output of power stations comes from a rotary turbine, which by it's nature is AC and therefore requires no power electronics to convert to DC. Secondly it is much easier to ... the sine wave current will naturally tend to zero at some point making the current easier to interrupt.

When we connect the large capacitor bank in series ?

Description : When we connect the large capacitor bank in series ?

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What is reverse power relay?

Description : What is reverse power relay?

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What is derating?

Description : What is derating?

Last Answer : A:The current currying of cables will change depending upon the site temperature (location of site), type of run (it will run through duct, trench, buried etc.), number of tray, depth ... of cable reduce than current currying capacity (which given to cable Catalogue) this is called derating.

Define IDMT relay?

Description : Define IDMT relay?

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Where should the lighting arrestor be placed in distribution lines?

Description : Where should the lighting arrestor be placed in distribution lines?

Last Answer : A:Near distribution transformers and out going feeders of 11kv and incomming feeder of 33kv and near power transformers in sub-stations.

What is the difference between MCB & MCCB, Where it can be used?

Description : What is the difference between MCB & MCCB, Where it can be used?

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Explain types of Earthing.

Description : Explain types of Earthing.

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What is Ferranti effect?

Description : What is Ferranti effect?

Last Answer : A: When receiving end voltage is greater than the sending end voltage.

What is buchholz relay and the significance of it in to the transformer?

Description : What is buchholz relay and the significance of it in to the transformer?

Last Answer : A:Buchholz relay is a gas based relay which is used for the protection of transformer from its internal faults. whenever any internal fault occurs in a transformer, the buchholz relay at once gives an ... then it stop its sound itself other wise it trips the circuit by its own tripping mechanism.

What is the difference between Isolator and Circuit Breaker?

Description : What is the difference between Isolator and Circuit Breaker?

Last Answer : A: Isolator is a off load device which is used for isolating the downstream circuits from upstream circuits for the reason of any maintenance on downstream circuits. it is manually operated ... specification 1) rated current 2) short circuit breaking capacity and 3) Instantaneous tripping current.

what is power factor? whether it should be high or low? why?

Description : what is power factor? whether it should be high or low? why?

Last Answer : A:Power factor is the ratio of true power to apparent power. It has to be ideally 1. If it is too low then cable over heating & equipment overloading will occur. if it is greater than 1 then load will ... : 0.95 to meet actual power, load has to draw less current(V constant),result in less losses).

Explain the working principle of the circuit breaker

Description : Explain the working principle of the circuit breaker

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What is the difference between surge arrestor and lightning arrestor?

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Last Answer : A:Lightning Arrestor is installed outside and the effect of lightning is grounded where as surge arrestor installed inside panels comprising of resistors which consumes the energy and nullify the effect of surge.

Why we use Vacuum Circuit Breaker in High Transmission System and not Air Circuit Breaker?

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What will happen when power factor is leading in distribution of power?

Description : What will happen when power factor is leading in distribution of power?

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what is ACSR cable and where we use it?

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Describe the operation carried out in Thermal power stations?

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What is "pu" in electrical engineering?

Description : What is "pu" in electrical engineering?

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What makes electricity by letting falling water turn turbines and generators?

Description : What makes electricity by letting falling water turn turbines and generators?

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Which of the synchroscope illustrations depicts the appropriate direction of rotation and position for closing the circuit breaker when paralleling AC generators? EL-0053 A. A B. B C. C D. D

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The division of the reactive KVA load between paralleled AC generators is initiated by the ______________. A. prime mover governors B. voltage regulators C. phase balance relay D. proportioner

Description : The division of the reactive KVA load between paralleled AC generators is initiated by the ______________. A. prime mover governors B. voltage regulators C. phase balance relay D. proportioner

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Description : An AC generator operating in parallel loses its excitation without tripping the circuit breaker. This will __________. A. not affect the faulty generator due to the compensation of the other generators B. ... between the armature and the bus D. cause high currents to be induced in the field windings

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Description : If three AC generators are operating in parallel, and one of them were to 'pull out' of synchronism with the other two generators, the ____________. A. normally operating AC generators will ... AC generators will overspeed and unload D. AC generator pulling out of synchronism will become motorized

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The removal of paint from electrical equipment, such as generators, should be cautiously undertaken because ____________. A. the mechanical shock of paint removal lessens the dielectric strength of the insulation B. the paint dust is composed of abrasive and semi-conducting materials which impair insulation C. paint dust buildup has a tendency to cause corrosion D. phase windings frequently become isolated from each other due to dust interference at the terminals

Description : The removal of paint from electrical equipment, such as generators, should be cautiously undertaken because ____________. A. the mechanical shock of paint removal lessens the dielectric strength ... phase windings frequently become isolated from each other due to dust interference at the terminals

Last Answer : Answer: B

The insulation of electric generators during short idle periods should be _____________. A. allowed to cool slowly to ambient temperatures B. flashed with direct current to remove any residual magnetism C. kept warm by using strip or space heaters D. relieved of all capacitive charge by grounding the conductors

Description : The insulation of electric generators during short idle periods should be _____________. A. allowed to cool slowly to ambient temperatures B. flashed with direct current to remove any residual ... using strip or space heaters D. relieved of all capacitive charge by grounding the conductors

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Description : On large generators, space heaters are used to ____________. A. keep the machine at ambient tmperature of the machinery space B. maintain rotor and stator winding temperatures above the dew point ... C. prevent condensation in the lube oil D. prevent electrolysis due to condensation in the bearings

Last Answer : Answer: B