Can you help by answering this question?

Why high voltage test is done?

24 views
in Electric Power Generation by

1 Answer

0 votes
by

Generators for peak load plants are usually designed for maximum efficiency at 50 to 75 percent full load.

Related questions

1 answer 17 views

State why nuclear power plants are used as base load plants and diesel power plants as a peak load plant. 

asked Sep 8, 2018 by Shimroz123
0 answers 18 views

What is base load and peak load power plants?

asked Mar 11, 2018 in Thermal and hydro prime movers by Zeeshan
1 answer 30 views

For a transformer, operating at constant load current, maximum efficiency will occur at?

asked Mar 19, 2018 in Transformer by Shimroz123
1 answer 32 views

A transformer operates 24 hours day at full -load. It's full -load efficiency is :  (A) equal all day efficiency (B) more than all -day efficiency (C) less than all -day efficiency (D) equal to maximum efficiency

asked Apr 30, 2018 in Electrical Engineering by Shimroz123
1 answer 8 views

Compare base load plant with peak load plant on any two points.

asked Sep 8, 2018 by Shimroz123
1 answer 33 views

An SSB transmitter produces a peak-to-peak voltage of 200 V across a 100 Ω antenna load. What is the Peak Envelope Power? A) 49.98 W B) 79.98 W C) 99.96 W D) 199.93 W

asked Jun 18, 2018 in Electronics Engineering by Shimroz123
1 answer 446 views

A single core cable is designed to work for a single phase system with a peak voltage of 220 kV. The maximum permissible stress in the dielectric is not to exceed 20 kV/mm. For economical size, the overall core diameter of the cable is (A) 28.2 mm (B) 26.4 mm (C) 24.4 mm (D) 22.0 mm

asked Apr 28, 2018 in Electrical Engineering by Shimroz123
1 answer 18 views

The efficiency of two identical transformers under load conditions can be determined by?

asked Mar 19, 2018 in Transformer by Shimroz123
1 answer 28 views

The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is known as?

asked Mar 20, 2018 in Synchronous machine by Shimroz123
1 answer 19 views

The maximum load that a power transformer can carry is limited by its?

asked Mar 19, 2018 in Transformer by Shimroz123
1 answer 19 views

The synchronous motor will develop maximum power when the load angle is?

asked Mar 18, 2018 in Synchronous machine by Shimroz123
1 answer 18 views

The problematic pollutants in emission of coal based generating plants __________.  (A) SO₂ (B) NOx (C) CO (D) All of the above

asked May 8, 2018 in Electric Power Generation by Shimroz123
1 answer 14 views

In hydroelectric power plants  (1) both operating and initial cost are high (2) both operating and initial cost are low (3) operating cost is low and initial cost is high (4) operating cost is high and initial cost is low

asked Apr 29, 2018 in Electric Power Generation by Shimroz123
0 answers 25 views

What is the purpose of the turbines in coal fired power plants?

asked Mar 10, 2018 in Electric Power Generation by Quiz
1 answer 72 views

What would happen if a power transformer designed for operation on 50 Hz (frequency) were connected to a 500 Hz (frequency) source of the same voltage:  (A) Eddy Current and Hysteresis losses will be excessive  (B) Current will be too much high  (C) Transformer may start to smoke and burn  (D) No effect

asked May 8, 2018 in Electrical Engineering by Shimroz123
1 answer 9 views

Identify the increasing order of voltage regulation of the following dc generators a same load :  (A) differential compound, shunt and under compound  (B) shunt, differential compound and under compound  (C) under compound, shunt and differential compound  (D) shunt, under compound and differential compound

asked Apr 30, 2018 in Electrical Machine by Shimroz123
1 answer 23 views

Two synchronous generators operating in parallel supply a common load of 2.5 MW. The frequency-power characteristics have a common slope of 1 MW/Hz and the no-load frequencies of the generators are 51.5 Hz and 51.0 Hz, respectively. Then the system frequency is (A) 50 Hz (B) 51 Hz (C) 51.25 Hz (D) 51.5 Hz

asked Apr 28, 2018 in Electrical Machine by Shimroz123
1 answer 16 views

For optimum generator scheduling for different power plants, the minimum fuel cost is obtained when

asked May 8, 2018 in Power system by Shimroz123
1 answer 48 views

The overall efficiency of Thermal Power Plant is equal to _______________ .  (A) Regenerative Cycle Efficiency (B) Renkine Cycle Efficiency (C) Carnot cycle efficiency (D) None of the above

asked May 8, 2018 in Electric Power Generation by Shimroz123
1 answer 13 views

The rankine cycle efficiency of steam power plant is  (1) 60-80% (3) 30-45% (2) 45-80% (4) 20-30%

asked Apr 29, 2018 in Electric Power Generation by Shimroz123
0 answers 30 views

The maximum torque which a synchronous motor will develop at rest for any angular position of the rotor, at rated stator supply voltage and frequency, is known as?

asked Mar 20, 2018 in Synchronous machine by Shimroz123
1 answer 41 views

Two synchronous generators G1, G2 are operating in parallel and are equally sharing KVAR (Lag) component of load. To shift part of KVAR from G2 to G1, while keeping terminal voltage fixed, the following action must be done

asked May 3, 2018 in Power system by Shimroz123
1 answer 27 views

In DC generators lamination core are generally made of?

asked Mar 3, 2018 in Electrical Machine by Quiz
1 answer 14 views

What is the maximum value of power factor?

asked Mar 19, 2018 in Electric Power Generation by Shimroz123
1 answer 26 views

A circuit breaker is designed to protect an electrical circuit from damage caused by :  (A) Over load (B) Short circuit (C) Over current (D) All of the above

asked May 8, 2018 in Switchgear And Protection by Shimroz123
1 answer 9 views

State any two applications of diesel power plants.

asked Sep 8, 2018 by Shimroz123
1 answer 16 views

List any two types of fuels used in electrical power generation plants.

asked Sep 7, 2018 by Shimroz123
1 answer 19 views

Classify hydro-electric power plants according to water flow regulation and explain in brief.

asked Sep 7, 2018 by Shimroz123

Welcome to electronics2electrical.com here you can ask questions related to electrical, electronics, mechanical, telecommunication, instrumentation, computer, mathematics, physics etc.
Be respectful to all the members. Do not copy and paste the answers from other websites which have copyright content. While asking question give full details about it.

Categories

Most popular tags

power motor dc circuit transformer voltage current used system phase resistance factor synchronous load ac energy induction electric generator series frequency between speed capacitor use electrical meter line difference control type mosfet transmission magnetic plant high single instrument bjt unit source advantages function diode and machine winding field define torque parallel amplifier supply shunt thyristor motors electricity arduino maximum time relay armature problem value on transformers types coil diagram state flow ratio material three formula starting direction theorem method emf operating efficiency digital wave microprocessor test instruments inductance loss measure operation connected signal low applications effect single-phase network temperature working constant losses different law wattmeter measuring compare controlled breaker drive device logic rc full switch flux wire resistivity disadvantages free of materials machines angle force converter conductor transistor gain open protection scr core measurement number bridge principle generators reactance circuits negative the friction iron loop short pole battery conservation steam resistors hysteresis computer using analog lines secondary station gate a rectifier inverter linear induced relays nuclear capacitance basic characteristics design direct work rotor electronics ammeter forces diesel damping rlc connection factors capacitors minimum insulation moving regulation running self systems air fault range main stability quality starter igbt eddy alternator ideal rl average 3-phase plants arc thermal error fuzzy biasing dielectric pressure balanced superposition errors copper rotation feedback impedance measured electronic electrons charge inductive transfer explain start off back curve over solar is three-phase tariff locomotive peak bias zener engineering commutator surge conductors rating universal potentiometer density permanent mechanical transducer capacity memory adc excitation two fuse pure harmonics application semiconductor inductor internal pmmc reaction welding resonance traction permeability breakers rms designed electromagnetic si generation brushes switching capacitive shaded rate 1 distribution resistor methods delta star oscillator reluctance simplification algebra 8085 boolean weston dynamometer insulating strength installation definition fuel heating earth units
...