Why Generator should run within capability region?

Why Generator should run within capability region?
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Answer :

Operating the Generator in excess of the capability curves will causes increase in copper temperature, thermal expansion and higher insulation stresses. 
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Related questions

Consider the following statements regarding capability curves of a synchronous generator :

Description : Consider the following statements regarding capability curves of a synchronous generator :  1. The MVA loading should not exceed the generator rating.  2. The field current should not be allowed to exceed a ... 4. The load angle must be more than 90°.  Which of the above statements are correct ?

Last Answer : Consider the following statements regarding capability curves of a synchronous generator :  1. The MVA loading should not exceed the generator rating.  2. The field current should not be allowed to exceed a ... .  Which of the above statements are correct ? 1, 2 and 3 only

An open occurring within the field rheostat of an AC generator can be detected by short circuiting its terminals and observing a ____________. A. negative deflection of the wattmeter pointer B. positive deflection of the wattmeter pointer C. buildup of alternator voltage D. low, but constant alternator voltage

Description : An open occurring within the field rheostat of an AC generator can be detected by short circuiting its terminals and observing a ____________. A. negative deflection of the wattmeter pointer B. ... of the wattmeter pointer C. buildup of alternator voltage D. low, but constant alternator voltage

Last Answer : Answer: C

The purpose of the commutator and brushes on a DC generator is to _____________. A. transfer generated direct current voltage from the armature to the line B. convert the alternating voltage generated within the armature to a direct voltage C. provide a sliding contact method to excite the field D. reduce sparking between the armature and the carbon brushes

Description : The purpose of the commutator and brushes on a DC generator is to _____________. A. transfer generated direct current voltage from the armature to the line B. convert the alternating voltage ... contact method to excite the field D. reduce sparking between the armature and the carbon brushes

Last Answer : Answer: B

Electric cables are formed of stranded wire to ____________. A. increase the current carrying capability for a given size wire B. increase their flexibility C. decrease the weight for a given size wire D. assure good conductivity at junction points

Description : Electric cables are formed of stranded wire to ____________. A. increase the current carrying capability for a given size wire B. increase their flexibility C. decrease the weight for a given size wire D. assure good conductivity at junction points

Last Answer : Answer: B

What is the negative sequence capability?

Description : What is the negative sequence capability?

Last Answer : I2 = 5% max,  I2 2 t = 7

If the residual flux is absent in the rotor iron of the isolated induction generator, a) it will not run. b) it will run as induction motor c) it will burn the winding d) it will not affect the characteristic of the generator

Description : If the residual flux is absent in the rotor iron of the isolated induction generator, a) it will not run. b) it will run as induction motor c) it will burn the winding d) it will not affect the characteristic of the generator

Last Answer : Ans: A

If the connections for the field and the armature on a DC motor are reversed, _____________. A. the motor will run as a generator B. the motor will not run C. the direction of rotation will be the same D. the direction of rotation will be reversed

Description : If the connections for the field and the armature on a DC motor are reversed, _____________. A. the motor will run as a generator B. the motor will not run C. the direction of rotation will be the same D. the direction of rotation will be reversed

Last Answer : Answer: C

Which statement is true concerning a split-phase induction motor? A. Motor rotation can be reversed without changing the windings or leads. B. Motor speed can be readily adjusted from zero to full speed. C. The motor will run as a generator with the proper wiring. D. Motor rotation can be reversed by reversing the leads on the starting winding.

Description : Which statement is true concerning a split-phase induction motor? A. Motor rotation can be reversed without changing the windings or leads. B. Motor speed can be readily adjusted from zero to full ... proper wiring. D. Motor rotation can be reversed by reversing the leads on the starting winding.

Last Answer : Answer: D

Undervoltage trips are frequently installed on switchboard circuit breakers to trip ____________. A. out generators in the event of severe arcing or sparking B. out generators when there is reversal of power in the main circuit C. the breaker if the generator overspeeds by 5%, but continues to run D. out generators when there is low voltage in the main circuit

Description : Undervoltage trips are frequently installed on switchboard circuit breakers to trip ____________. A. out generators in the event of severe arcing or sparking B. out generators when there is reversal of power ... , but continues to run D. out generators when there is low voltage in the main circuit

Last Answer : Answer: D

Loss of or weak residual magnetism in an alternator or generator can be corrected for by _________________. A. running the rotor in the opposite direction for 5 minutes B. allowing the generator to run at 10% of normal speed for 5 minutes C. running the generator at normal speed with the field rheostat fully counterclockwise D. using a storage battery or battery charger to 'flash' the field

Description : Loss of or weak residual magnetism in an alternator or generator can be corrected for by _________________. A. running the rotor in the opposite direction for 5 minutes B. allowing the generator ... rheostat fully counterclockwise D. using a storage battery or battery charger to 'flash' the field

Last Answer : Answer: D

A generator has been exposed to water and is being checked for its safe operation. Therefore, it is necessary to _______________. A. check for shorted coils with a growler B. take moisture readings with a hydrometer C. test insulation values with a megger D. ground the commutator, or slip rings and run it at half load for 12 hours

Description : A generator has been exposed to water and is being checked for its safe operation. Therefore, it is necessary to _______________. A. check for shorted coils with a growler B. take moisture readings with a ... a megger D. ground the commutator, or slip rings and run it at half load for 12 hours

Last Answer : Answer: C

A dc shunt generator has a speed of 800 rpm when delivering 20 A to the load at the terminal voltage of 220V. If the same machine is run as a motor it takes a line current of 20A from 220V supply. The speed of the machine as a motor will be (A) 800 rpm. (B) more than 800 rpm. (C) less than 800 rpm. (D) both higher or lower than 800 rpm.

Description : A dc shunt generator has a speed of 800 rpm when delivering 20 A to the load at the terminal voltage of 220V. If the same machine is run as a motor it takes a line current of 20A from 220V supply. The speed of ... . (B) more than 800 rpm. (C) less than 800 rpm. (D) both higher or lower than 800 rpm.

Last Answer : (C) less than 800 rpm.

What type of device could allow a refrigerator to place a replacement order for an item contained within it? a.digital network b.generator c.smart phone

Description : What type of device could allow a refrigerator to place a replacement order for an item contained within it? a.digital network b.generator c.smart phone

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Can you add WiFi printing capability to a printer that didn't come with it?

Description : Can you add WiFi printing capability to a printer that didn't come with it?

Last Answer : You could play around with something like this No guarantees.

How to build and grow a non existing web analytics capability?

Description : How to build and grow a non existing web analytics capability?

Last Answer : Outsource it to a firm that specializes in developing the website and providing data on it at the same time.

If you use any Yahoo products or services, are you afraid of losing that capability as Yahoo deteriorates?

Description : If you use any Yahoo products or services, are you afraid of losing that capability as Yahoo deteriorates?

Last Answer : answer:I use yahoo mail as an alternative email address for anonymity (I use gmail for most of my mail). If I lost yahoo mail it would be a minor inconvenience. I still have a “my yahoo” news page, but it has become so reduced over the years, I wouldn’t miss it after a week or so.

Is it possible to add Bluetooth capability to a device via USB?

Description : Is it possible to add Bluetooth capability to a device via USB?

Last Answer : answer:They make them. I have a six dollar USB adapter for my computer to use bluetooth. But, your car headset would need the drivers to see it. It might or might not have them. Your best bet here is to google the model of your stereo and bluetooth and see if anything pops up.

Will telephones ever come with a video capability?

Description : Will telephones ever come with a video capability?

Last Answer : answer:THink back to the NY World's Fair in 1964-65. They announced and displayed the Picturephone back then. When I was a kid, we went to the Fair and I actually sat and used that phone ... and the average person didn't have the proper lines coming into their house. The internet makes it possible.

Do you use your bank's mobile deposit (take a picture of the check with a smartphone) capability?

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Are you for or against companies being granted the capability of "googling" your face?

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Does anyone know any good and FREE DVD software with Screencap capability?

Description : Does anyone know any good and FREE DVD software with Screencap capability?

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If we had the capability, should we give robots the same abilities as the human mind?

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Is Chinese technological capability starting to worry you?

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What do you think about HD video capability on Canon SLRs?

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Does the iPad have book downloading and reading capability?

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Does Word have a voice recording capability?

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Does the way I website was built affect its capability to handle big amounts of load on its server?

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Printers with superlative scanning capability?

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In 1990 Saddam Hussein had the capability to control ho much of the worlds oil?

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WHAT DO I DO BECAUSE I DO NOT HAVE TEXT CAPABILITY ?

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Does the Nikon Coolpix S220 camera have the capability to record short video clips as well as take pictures?

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What does it mean when an espresso machine says it has pre-infusion capability?

Description : What does it mean when an espresso machine says it has pre-infusion capability?

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Do any DVD players come with DVR capability or would I have to buy a separate DVR unit?

Description : Do any DVD players come with DVR capability or would I have to buy a separate DVR unit?

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Does the BlackBerry Torch 9850 have WiFi capability?

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Improving Your Computer's Speed Capability?

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Can I do everything on a cell phone with computer capability that I can on a laptop?

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A dumb terminal has A) an embedded microprocessor B) extensive memory C) independent processing capability D) a keyboard and screen

Description : A dumb terminal has A) an embedded microprocessor B) extensive memory C) independent processing capability D) a keyboard and screen

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Which organism/groups do not have photosynthesizing capability?

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Capability of an isolated single cell to multiply and differentiate into multicellular organism

Description : Capability of an isolated single cell to multiply and differentiate into multicellular organism

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Description : Capability of rotating objects around a fixed axis is called?

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Molten sodium is used as a coolant in a fast breeder reactor, because of its (A) Excellent moderating properties (B) Neutron breeding capability (C) Faster heat removal capability from the core (D) Capability to increase the reaction rate in the core

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When a project has completed the handover and closure phase: a. the project deliverables are ready for commissioning. b. the project deliverables are ready for handing over to the users. c. the project documentation must be disposed of. d. the capability is now in place for the benefits to be realized.

Description : When a project has completed the handover and closure phase: a. the project deliverables are ready for commissioning. b. the project deliverables are ready for handing over to the users. c. the project ... must be disposed of. d. the capability is now in place for the benefits to be realized.

Last Answer : d. the capability is now in place for the benefits to be realized.

Following are the characteristics of Project Mindset. (A) Time, Responsiveness, Information sharing, Processes, structured planning (B) Time, Project management, Information sharing, Processes, structured planning (C) Time, Responsiveness, Information sharing, capability, structured planning (D) Time, Responsiveness, Information sharing, Processes, project planning

Description : Following are the characteristics of Project Mindset. (A) Time, Responsiveness, Information sharing, Processes, structured planning (B) Time, Project management, Information sharing, Processes ... , structured planning (D) Time, Responsiveness, Information sharing, Processes, project planning

Last Answer : (A) Time, Responsiveness, Information sharing, Processes, structured planning

When a project has completed the handover and closure phase: a. the project deliverables are ready for commissioning. b. the project deliverables are ready for handing over to the users. c. the project documentation must be disposed of. d. the capability is now in place for the benefits to be realised.

Description : When a project has completed the handover and closure phase:  a. the project deliverables are ready for commissioning.  b. the project deliverables are ready for handing over to the users.  c. the ... must be disposed of.  d. the capability is now in place for the benefits to be realised.

Last Answer : d. the capability is now in place for the benefits to be realised.

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Description : Hollow saddle key is superior to flat saddle key as far as power transmitting capability is concerned. a) True b) False

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Description : Hollow saddle key is superior to flat saddle key as far as power transmitting capability is concerned. a) True b) False

Last Answer : b) False