What is the full form of 'MVA' ? -How To ?

What is the full form of 'MVA' ? -How To ?
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The full form of 'MVA' is Motor Vehicles Act
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What is the full form of MVA ?

Description : What is the full form of MVA ?

Last Answer : MVA full version Mega Volt Ampere.

How is a 100 MVA transformer cooled?

Description : How is a 100 MVA transformer cooled?

Last Answer : 100 MVA Transformer is cooled by forced oil forced water cooling method..

If we give 2334 A, 540V on Primary side of 1.125 MVA step up transformer, then what will be the Secondary Current, If Secondary Voltage=11 KV?

Description : If we give 2334 A, 540V on Primary side of 1.125 MVA step up transformer, then what will be the Secondary Current, If Secondary Voltage=11 KV?

Last Answer : A. As we know the Voltage & current relation for transformer-V1/V2 = I2/I1 We Know, VI= 540 V; V2=11KV or 11000 V; I1= 2334 Amps. By putting these value on Relation540/11000= I2/2334 So,I2 = 114.5 Amps

If we give 2334 A, 540V on Primary side of 1.125 MVA step up transformer, then what will be the Secondary Current, If Secondary Voltage=11 KV?

Description : If we give 2334 A, 540V on Primary side of 1.125 MVA step up transformer, then what will be the Secondary Current, If Secondary Voltage=11 KV?

Last Answer :  As we know the Voltage & current relation for transformer-V1/V2 = I2/I1 We Know, VI= 540 V; V2=11KV or 11000 V; I1= 2334 Amps. By putting these value on Relation540/11000= I2/2334 So,I2 = 114.5 Amps

For which of the following ratings of the transformer differential protection is recommended ? (a) above 30 kVA. (b) equal to and above 5 MVA (c) equal to and above 25 MVA (d) none of the above

Description : For which of the following ratings of the transformer differential protection is recommended ? (a) above 30 kVA. (b) equal to and above 5 MVA (c) equal to and above 25 MVA (d) none of the above

Last Answer : (b) equal to and above 5 MVA

Which of the following statements is incorrect ? (a) Lightning arrestors are used before the switchgear (b) Shunt reactors are used as compensation reactors (c) The peak short current is (1.8 xV2) times the A.C. component (d) The MVA at fault is equal to base MVA divided by per unit equivalent fault reactance

Description : Which of the following statements is incorrect ? (a) Lightning arrestors are used before the switchgear (b) Shunt reactors are used as compensation reactors (c) The peak short current is (1.8 xV2) ... component (d) The MVA at fault is equal to base MVA divided by per unit equivalent fault reactance

Last Answer : (a) Lightning arrestors are used before the switchgear

The forced oil and air circulation method is usual one for transformers of capacities (a) upto 5 MVA (b) upto 10 MVA (c) upto 20 MVA (d) 30 MVA upwards

Description : The forced oil and air circulation method is usual one for transformers of capacities (a) upto 5 MVA (b) upto 10 MVA (c) upto 20 MVA (d) 30 MVA upwards

Last Answer : (d) 30 MVA upwards

Transformers with a capacity of upto _____ have a cooling radiator system with natural cooling (a) 2 MVA (b) 5 MVA (c) 7.5 MVA (d) 10 MVA

Description : Transformers with a capacity of upto _____ have a cooling radiator system with natural cooling (a) 2 MVA (b) 5 MVA (c) 7.5 MVA (d) 10 MVA

Last Answer : (d) 10 MVA

The inertia constant of a 100 MVA, 11 kV water wheel generator is 4. The energy stored in the rotor at the

Description : The inertia constant of a 100 MVA, 11 kV water wheel generator is 4. The energy stored in the rotor at the synchronous speed is: A) 400 Mega Joule B) 400 Kilo Joule C) 25 Mega Joule D) 25 Kilo Joule

Last Answer : The inertia constant of a 100 MVA, 11 kV water wheel generator is 4. The energy stored in the rotor at the synchronous speed is: 400 Mega Joule

A 20-MVA, 6.6-kV, 3-phase alternator is connected to a 3-phase transmission line. The per unit

Description : A 20-MVA, 6.6-kV, 3-phase alternator is connected to a 3-phase transmission line. The per unit positive-sequence, negative-sequence and zero-sequence impedances of the alternator are j0.1, j0.1 and j0.04 respectively. The neutral of ... the fault is  (A) 513.8 V (B) 889.9 V (C) 1112.0 V (D) 642.2 V

Last Answer : A 20-MVA, 6.6-kV, 3-phase alternator is connected to a 3-phase transmission line. The per unit positive-sequence, negative-sequence and zero-sequence impedances of the alternator are j0.1, ... line. The voltage of the alternator neutral with respect to ground during the fault is 642.2 V

A 50 Hz, 4-pole, 500 MVA, 22 kV turbo-generator is delivering rated megavolt amperes at 0.8 power factor.

Description : A 50 Hz, 4-pole, 500 MVA, 22 kV turbo-generator is delivering rated megavolt amperes at 0.8 power factor. Suddenly a fault occurs reducing in electric power output by 40%. Neglect losses and assume constant power input to the ... the time of fault will be  (A) 1.528 (B) 1.018 (C) 0.848 (D) 0.509

Last Answer : A 50 Hz, 4-pole, 500 MVA, 22 kV turbo-generator is delivering rated megavolt amperes at 0.8 power factor. Suddenly a fault occurs reducing in electric power output by 40%. Neglect losses and assume ... the shaft. The accelerating torque in the generator in MNm at the time of fault will be 1.018 

The p.u. parameter for a 500 MVA machine on its own base are: inertia, M = 20 p.u. ; reactance, X = 2 p.u. The

Description : The p.u. parameter for a 500 MVA machine on its own base are: inertia, M = 20 p.u. ; reactance, X = 2 p.u. The p.u. values of inertia and reactance on 100 MVA common base, respectively, are (A) 4, 0.4 (B) 100, 10 (C) 4, 10 (D) 100, 0.4

Last Answer : The p.u. parameter for a 500 MVA machine on its own base are: inertia, M = 20 p.u. ; reactance, X = 2 p.u. The p.u. values of inertia and reactance on 100 MVA common base, respectively, are 100, 0.4

A generator is connected through a 20 MVA, 13.8/138 kV step down transformer, to a transmission line.

Description : A generator is connected through a 20 MVA, 13.8/138 kV step down transformer, to a transmission line. At the receiving end of the line a load is supplied through a step down transformer of 10 MVA, 138/69 kV rating. A 0.72 ... load (in per unit) in generator will be (A) 36 (B) 1.44 (C) 0.72 (D) 0.18

Last Answer : A generator is connected through a 20 MVA, 13.8/138 kV step down transformer, to a transmission line. At the receiving end of the line a load is supplied through a step down transformer of 10 MVA, 138/ ... MVA and 69 kV in load circuit, the value of the load (in per unit) in generator will be 36 

A three-phase, 33 kV oil circuit breaker is rated 1200 A, 2000 MVA, 3 s. The symmetrical breaking current is

Description : A three-phase, 33 kV oil circuit breaker is rated 1200 A, 2000 MVA, 3 s. The symmetrical breaking current is  (A) 1200 A (B) 3600 A (C) 35 kA (D) 104.8 kA

Last Answer : A three-phase, 33 kV oil circuit breaker is rated 1200 A, 2000 MVA, 3 s. The symmetrical breaking current is 35 kA 

A 100 MVA, 11 KV, 3-phase, 50 Hz, 8—pole synchronous generator has an inertia constant H equal to

Description : A 100 MVA, 11 KV, 3-phase, 50 Hz, 8—pole synchronous generator has an inertia constant H equal to 4 seconds. The stored energy in the rotor of the generator at synchronous speed will be  A) 100 MJ B) 400 MJ C) 800 MJ D) 12.5 MJ

Last Answer : 800

A 500 MVA, 11 KV synchronous generator has 0.2 p.u. synchronous reactance. The p.u. synchronous reactance

Description : A 500 MVA, 11 KV synchronous generator has 0.2 p.u. synchronous reactance. The p.u. synchronous reactance on the base values of 100 MVA and 22 KV is  A) 0.16 B) 0.01 C) 4.0 D) 0.25

Last Answer : A 500 MVA, 11 KV synchronous generator has 0.2 p.u. synchronous reactance. The p.u. synchronous reactance on the base values of 100 MVA and 22 KV is 0.01

If the inertia constant H of a machine of 200 MVA is 2 p.u., its value corresponding to 400 MVA will be

Description : If the inertia constant H of a machine of 200 MVA is 2 p.u., its value corresponding to 400 MVA will be   (a) 4 p.u. (b) 2 p.u. (c) 1.0 p.u. (d) 0.5 p.u. 

Last Answer : If the inertia constant H of a machine of 200 MVA is 2 p.u., its value corresponding to 400 MVA will be 1.0 p.u.

A 50 Hz, 4 pole turboalternator rated at 20 MVA. 13.2 KV has an inertia constant H = 4 KW sec/KVA.

Description : A 50 Hz, 4 pole turboalternator rated at 20 MVA. 13.2 KV has an inertia constant H = 4 KW sec/KVA. The K.E. stored in the rotor at synchronous speed is

Last Answer : A 50 Hz, 4 pole turboalternator rated at 20 MVA. 13.2 KV has an inertia constant H = 4 KW sec/KVA. The K.E. stored in the rotor at synchronous speed is 80 MJ

A transmission line has 1 P.0 impedance on a base of 11 KV, 100 MVA. On a base of 55 KV. it will have a P.0 impedance of

Description : A transmission line has 1 P.0 impedance on a base of 11 KV, 100 MVA. On a base of 55 KV. it will have a P.0 impedance of

Last Answer : A transmission line has 1 P.0 impedance on a base of 11 KV, 100 MVA. On a base of 55 KV. it will have a P.0 impedance of 0.02 P.U

A 3-phase star-connected 75 MVA, 25 kV 3-phase synchronous generator has a synchronous reactance of...

Description : A 3-phase star-connected 75 MVA, 25 kV 3-phase synchronous generator has a synchronous reactance of 1.0 p.u. The per unit value to a 90 MVA base and 30 kV is (A) 2/15 p.u. (B) 5/6 p.u. (C) 1.0 p.u. (D) 1.2 p.u.

Last Answer : A 3-phase star-connected 75 MVA, 25 kV 3-phase synchronous generator has a synchronous reactance of 1.0 p.u. The per unit value to a 90 MVA base and 30 kV is 5/6 p.u.

A 3-phase circuit breaker is rated at 1250 A, 2000 MVA, 33 kV, 4s. Its making current capacity will be

Description : A 3-phase circuit breaker is rated at 1250 A, 2000 MVA, 33 kV, 4s. Its making current capacity will be   (a) 35 kA (b) 89 kA (c) 79 kA (d) 69 kA

Last Answer : 89

The per unit impedance of a circuit element is 0.30. If the base kV and base MVA are halved, then the new...

Description : The per unit impedance of a circuit element is 0.30. If the base kV and base MVA are halved, then the new value of the per unit impedance of the circuit element will be:  (A) 0.3 (B) 0.6 (C) 0.003 (D) 0.006 

Last Answer : 3

A 60 Hz, 4 pole turbo generator rated 100 MVA, 13.8 KV has an inertia constant of 10 MJ/MVA. Find the stored...

Description : A 60 Hz, 4 pole turbo generator rated 100 MVA, 13.8 KV has an inertia constant of 10 MJ/MVA. Find the stored energy in the rotor at synchronous speed.  (A) 10 MJ (B) 100 J (C) 1000 J (D) 1000 MJ 

Last Answer : c

What is the full form of 'YWCA' ? -How To ?

Description : What is the full form of 'YWCA' ? -How To ?

Last Answer : The full form of 'YWCA' is Young Women's Christian Association

What is the full form of 'yr' ? -How To ?

Description : What is the full form of 'yr' ? -How To ?

Last Answer : The full form of 'yr' is Year

What is the full form of 'YMCA' ? -How To ?

Description : What is the full form of 'YMCA' ? -How To ?

Last Answer : The full form of 'YMCA' is Young Men's Christian Association

What is the full form of 'WWW' ? -How To ?

Description : What is the full form of 'WWW' ? -How To ?

Last Answer : The full form of 'WWW' is World Wide Web

What is the full form of 'WTO' ? -How To ?

Description : What is the full form of 'WTO' ? -How To ?

Last Answer : The full form of 'WTO' is World Trade Organisation

What is the full form of 'YC' ? -How To ?

Description : What is the full form of 'YC' ? -How To ?

Last Answer : The full form of 'YC' is Youth Congress

What is the full form of 'Xmas' ? -How To ?

Description : What is the full form of 'Xmas' ? -How To ?

Last Answer : The full form of 'Xmas' is Christmas

What is the full form of 'WTC' ? -How To ?

Description : What is the full form of 'WTC' ? -How To ?

Last Answer : The full form of 'WTC' is World Trade Centre

What is the full form of 'WP' ? -How To ?

Description : What is the full form of 'WP' ? -How To ?

Last Answer : The full form of 'WP' is Word Processing

What is the full form of 'WPI' ? -How To ?

Description : What is the full form of 'WPI' ? -How To ?

Last Answer : The full form of 'WPI' is Wholesale Price Index

What is the full form of 'WHO' ? -How To ?

Description : What is the full form of 'WHO' ? -How To ?

Last Answer : The full form of 'WHO' is World Health Organisation

What is the full form of 'WFTU' ? -How To ?

Description : What is the full form of 'WFTU' ? -How To ?

Last Answer : The full form of 'WFTU' is World Federation of Trade Unions

What is the full form of 'WEF' ? -How To ?

Description : What is the full form of 'WEF' ? -How To ?

Last Answer : The full form of 'WEF' is World Economic Forum

What is the full form of 'WDV' ? -How To ?

Description : What is the full form of 'WDV' ? -How To ?

Last Answer : The full form of 'WDV' is Written Down Value

What is the full form of 'WDM' ? -How To ?

Description : What is the full form of 'WDM' ? -How To ?

Last Answer : The full form of 'WDM' is Wholesale Debt Market

What is the full form of 'WDM' ? -How To ?

Description : What is the full form of 'WDM' ? -How To ?

Last Answer : The full form of 'WDM' is World Debt Market

What is the full form of 'WCA' ? -How To ?

Description : What is the full form of 'WCA' ? -How To ?

Last Answer : The full form of 'WCA' is Workmen's Compensation Act

What is the full form of 'WB' ? -How To ?

Description : What is the full form of 'WB' ? -How To ?

Last Answer : The full form of 'WB' is West Bengal

What is the full form of 'WAN' ? -How To ?

Description : What is the full form of 'WAN' ? -How To ?

Last Answer : The full form of 'WAN' is Wide Area Network

What is the full form of 'WAY' ? -How To ?

Description : What is the full form of 'WAY' ? -How To ?

Last Answer : The full form of 'WAY' is World Assembly of Youth

What is the full form of 'VVIP' ? -How To ?

Description : What is the full form of 'VVIP' ? -How To ?

Last Answer : The full form of 'VVIP' is Very Very Important Person

What is the full form of 'VSNL' ? -How To ?

Description : What is the full form of 'VSNL' ? -How To ?

Last Answer : The full form of 'VSNL' is Videsh Sanchar Nigam Limited

What is the full form of 'VSSC' ? -How To ?

Description : What is the full form of 'VSSC' ? -How To ?

Last Answer : The full form of 'VSSC' is Vikram Sarabhai Space Centre

What is the full form of 'VSAT' ? -How To ?

Description : What is the full form of 'VSAT' ? -How To ?

Last Answer : The full form of 'VSAT' is Very Small Aperture Terminal

What is the full form of 'VPP' ? -How To ?

Description : What is the full form of 'VPP' ? -How To ?

Last Answer : The full form of 'VPP' is Value Payable Post

What is the full form of 'VRS' ? -How To ?

Description : What is the full form of 'VRS' ? -How To ?

Last Answer : The full form of 'VRS' is Voluntary Retirement Scheme

What is the full form of 'VHSE' ? -How To ?

Description : What is the full form of 'VHSE' ? -How To ?

Last Answer : The full form of 'VHSE' is Vocational Higher Secondary School