State turbine governor setting.

State turbine governor setting. 
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On 2560 rpm turbine governor becomes effective and on 2760 rpm is turbine governor take over speed. 
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Two AC generators of the same capacity are operating in parallel. One with a zero speed droop setting and the other with a 5% speed droop. If its capacity is not exceeded, the unit whose governor has the zero speed droop setting will _____________. A. assume the smaller share of the load B. maintain the frequency of the system C. have poor sensitivity characteristics D. have poor power response

Description : Two AC generators of the same capacity are operating in parallel. One with a zero speed droop setting and the other with a 5% speed droop. If its capacity is not exceeded, the unit whose ... B. maintain the frequency of the system C. have poor sensitivity characteristics D. have poor power response

Last Answer : Answer: B

The governor control switch of an alternator is moved to the 'raise' position. This action will _____________. A. raise the no-load speed setting of the governor B. raise the percentage of speed droop C. lower the no-load speed setting of the governor D. lower the percentage of speed droop

Description : The governor control switch of an alternator is moved to the 'raise' position. This action will _____________. A. raise the no-load speed setting of the governor B. raise the percentage of speed droop C. lower the no-load speed setting of the governor D. lower the percentage of speed droop

Last Answer : Answer: A

Regarding an AC generator connected to the main electrical bus; as the electric load and power factor vary, a corresponding change is reflected in the generator armature reaction. These changes in armature reaction are compensated for by the __________ A. governor speed droop setting B. voltage regulator C. balance coil D. phase-balance relay

Description : Regarding an AC generator connected to the main electrical bus; as the electric load and power factor vary, a corresponding change is reflected in the generator armature reaction. These changes in ... . governor speed droop setting B. voltage regulator C. balance coil D. phase-balance relay

Last Answer : Answer: B

Which statement best describes the operating principle of a constant-speed propeller? a. As throttle setting is changed by the pilot, the prop governor causes pitch angle of the propeller blades to remain unchanged b. The propeller control regulates the engine RPM and in turn the propeller RPM c. A high blade angle, or increased pitch, reduces the propeller drag and allows more engine power for take-offs d. As the propeller control setting is changed by the pilot, the RPM of the engines remains constant as the pitch angle of the propeller changes

Description : Which statement best describes the operating principle of a constant-speed propeller? a. As throttle setting is changed by the pilot, the prop governor causes pitch angle of the propeller blades to ... the pilot, the RPM of the engines remains constant as the pitch angle of the propeller changes

Last Answer : b. The propeller control regulates the engine RPM and in turn the propeller RPM

1. What is the study of principles and procedures of classification? 2. Who appoints the Governor of Jammu and Kashmir? 3. Which substance is used to retard the setting action of cement? 4. Shyok is a tributary of which river? 5. Who is well known for his contribution in the field of Algebra?

Description : 1. What is the study of principles and procedures of classification? 2. Who appoints the Governor of Jammu and Kashmir? 3. Which substance is used to retard the setting action of cement? 4. ... . What is the minimum forest cover to maintain ecological balance? 20. Which saint wrote Bijak' ?

Last Answer : Answer : 1. Taxonomy 2. President 3. CaSO.2HO 4. Indus 5. Bhaskara 6. Capital expenditure 7. Peru 8. K. C. Mehta 9. Brahmaputra 10. Bukka I 11. Governor 12. Centrifugal force 13. Japan 14. Hurricane 15. Hasan 16. National Development Council 17. 4 18. 25 years 19. 33% 20. Kabir

State the factors, for the choice of electrical system for an aero turbine.

Description : State the factors, for the choice of electrical system for an aero turbine.

Last Answer : A:The choice of electrical system for an aero turbine is guided by three factors: Type of electrical output: dc, variable- frequency ac, and constant- frequency ac. Aero turbine ... energy output: in conjunction with battery or other form of storage, or interconnection with power grid.

State the factors, for the choice of electrical system for an aero turbine.

Description : State the factors, for the choice of electrical system for an aero turbine.

Last Answer : The choice of electrical system for an aero turbine is guided by three factors: Type of electrical output: dc, variablefrequency ac, and constant- frequency ac. Aero turbine rotational speed ... output: in conjunction with battery or other form of storage, or interconnection with power grid.

Which power plant has minimum operating cost? a) Hydroelectric power plant b) Thermal power plant c) Nuclear power plant d) Gas Turbine Power Plant Ans: A 42. Which of the following have highest operating cost? a) Hydroelectric power plant b) Thermal power plant c) Nuclear power plant d) Solar electric power plant

Description : Which power plant has minimum operating cost? a) Hydroelectric power plant b) Thermal power plant c) Nuclear power plant d) Gas Turbine Power Plant Ans: A 42. Which of the following have ... a) Hydroelectric power plant b) Thermal power plant c) Nuclear power plant d) Solar electric power plant

Last Answer : Ans: B

The propeller shaft speed in a turbo-electric, synchronous, propulsion drive motor is changed by varying the __________. A. turbine speed B. number of motor poles C. field strength of the generator D. field strength of the motor

Description : The propeller shaft speed in a turbo-electric, synchronous, propulsion drive motor is changed by varying the __________. A. turbine speed B. number of motor poles C. field strength of the generator D. field strength of the motor

Last Answer : Answer: A

Turbine-Generator Lubrication Oil System Function

Description : Turbine-Generator Lubrication Oil System Function

Last Answer : Turbine-Generator Lubrication Oil System Function For large turbine-generators forced lubrication system and water cooling system should be continuously required during the operation of the turbine-generator and ... when the oil pressure is low. A second backup dc pumps are sometimes provided.

What are the working fluids in gas turbine?

Description : What are the working fluids in gas turbine?

Last Answer : 1.Air 2.Helium 3.Argon 4.Carbon dioxide

Explain reaction turbine in terms of head:

Description : Explain reaction turbine in terms of head:

Last Answer : High head- Francis Medium head- Propeller Low head- Kaplan

What is the purpose of TOPP (turbine oil purification plant)?

Description : What is the purpose of TOPP (turbine oil purification plant)? 

Last Answer : The purpose of TOPP is to remove the water ingress in turbine oil system from the gland leaks, cooler leakage, and solid metal particles, which are produced due to rust, wear of bearings and to normalize the ... capacity of TOPP is, for solids - 5 microns and for water - 300 to 500 parts per milli.

What is the type turbine installed in KGS?

Description : What is the type turbine installed in KGS? 

Last Answer : Tandem compounded to expansion of steam, impulse reaction type.  

What type of governing system used in turbine and what are the purposes of the system?

Description : What type of governing system used in turbine and what are the purposes of the system? 

Last Answer : Hydraulic governing system of centrifugal (speed) governer type is adopted in turbine. Sensitive oil pressure to actuate centrifugal governer is 6.1 kg/cm2 (max). At 6.7 kg/cm2 relief valve ... speeder gear from BPC signal. Once synchronised the grid frequency and speeder gear controls the speed. 

Write critical speeds of turbine generator?

Description : Write critical speeds of turbine generator?  

Last Answer : Generator rotor 1st critical speed 1283 rpm 2nd critical speed 3600 rpm Combined turbine generator 1st critical speed 1938 rpm 2nd critical speed 2120 rpm 3rd critical speed 2385 rpm 4th critical speed 2837 rpm 

What are the futures of turbine generator?

Description : What are the futures of turbine generator? 

Last Answer : a. Low heat drop b. Moisture control (HP-0.26%, LP-3%.) c. Turbine governing system d. 70% steam dumping to the condenser to avoid reactor trip. e. Gland sealing f. LP exhaust hood cooling g. Generator stator and rotor cooling h. Hydrogen sealing i. Static excitation 

How shaft voltage produced by turbine?

Description : How shaft voltage produced by turbine? 

Last Answer : Due to un-symmetry in the flux path of core, non-uniform air gap, un-symmetry in the rotor magnetic field during short circuit in the rotor winding, causes voltage to develop across the ends of rotor shaft. 

How dearator pressure is maintained after turbine trip?

Description : How dearator pressure is maintained after turbine trip? 

Last Answer : Pegging steam is used to maintain dearator pressure after turbine trip.  

How turbine oil purification is achieved?

Description : How turbine oil purification is achieved?

Last Answer : Oil purification is achieved by centrifugal operation.  

Explain the main difference between impulse and reaction turbine.

Description : Explain the main difference between impulse and reaction turbine. 

Last Answer : When the inlet pressure of steam to the turbine is equal to outlet pressure of steam from the turbine the turbine is called the impulse turbine. In this type the heat is added is very less. ... than the inlet pressure of the steam. There is reduction in pressure with the increase in kinetic energy.

What is the purpose of turbine governing system?

Description : What is the purpose of turbine governing system?

Last Answer : Turbine governing system governs the speed of the turbine with the help of centrifugal governer. It reduces the steam inlet when turbine over speeds.  

What are the methods of removing moisture from turbine?

Description : What are the methods of removing moisture from turbine?

Last Answer : a. External method by moisture separator and reheater, which separates the moisture and reheates the steam. b. Internally by stainless steel mesh, which reduces moisture (water particles) to 1%. c. By main steam reheat. 

Explain the principle of working of impulse steam turbine.

Description : Explain the principle of working of impulse steam turbine. 

Last Answer : When steam enters the turbine it suffers a change in direction and momentum, which gives rise to the rotation of the turbine. There will be no drop in pressure in impulse steam turbine.  

Flue gases coming out from furnace is first going through a) Turbine b) Economizer c) Air pre-heater d) Chimney

Description : Flue gases coming out from furnace is first going through a) Turbine b) Economizer c) Air pre-heater d) Chimney

Last Answer : Ans: Economizer

Water hamming effect is occurs in a) Surge tank b) Penstock c) Turbine d) Reservoir

Description : Water hamming effect is occurs in a) Surge tank b) Penstock c) Turbine d) Reservoir

Last Answer : Ans: Penstock

Low head plants generally use (A) Pelton Turbines (B) Francis Turbine (C) Pelton or Francis Turbine (D) Kaplan Turbines

Description : Low head plants generally use (A) Pelton Turbines (B) Francis Turbine (C) Pelton or Francis Turbine (D) Kaplan Turbines

Last Answer : Ans: A In the hysterisis motor, the direction of rotation can be reversed by shifting the shaded pole region with respect to main pole. But not by changing supply lead because it has ac supply.

As shown in the illustration, the circuit which 'shapes' the linear output of the thrust lever so that the steady-state ship speed is linear with respect to that lever's setting is the _____________. EL-0095 A. 'pitch controller' B. 'error amplifier' C. 'function generator' D. 'servo amplifier'

Description : As shown in the illustration, the circuit which 'shapes' the linear output of the thrust lever so that the steady-state ship speed is linear with respect to that lever's setting is the _____________. EL-0095 A. 'pitch controller' B. 'error amplifier' C. 'function generator' D. 'servo amplifier'

Last Answer : Answer: C

A loss of field excitation to an AC generator while operating in parallel will cause it to ____________. A. absorb more and more load due to decreased armature reaction B. lose its load due to the inherent speed droop built into the governor C. smoke and overload due to field flashover as residual field flux changes polarity D. lose its load, begin to motorize, trip out on reverse power relay, and possibly overspeed

Description : A loss of field excitation to an AC generator while operating in parallel will cause it to ____________. A. absorb more and more load due to decreased armature reaction B. lose its load due to ... polarity D. lose its load, begin to motorize, trip out on reverse power relay, and possibly overspeed

Last Answer : Answer: D

Equalization of the power factors of two alternators operating in parallel is accomplished _____________. A. manually, by adjusting the governor controls B. automatically, by automatic voltage regulators C. manually, adjusting the output of current transformers D. automatically, by the designed action of the governors

Description : Equalization of the power factors of two alternators operating in parallel is accomplished _____________. A. manually, by adjusting the governor controls B. automatically, by automatic voltage regulators ... the output of current transformers D. automatically, by the designed action of the governors

Last Answer : Answer: B

In the illustration, the diode between terminals 16 and 17 is to _________. EL-0046 A. insure that the voltage across the governor coil (EG-3P) never exceeds .6 VDC B. compensate for the temperature difference of the governor oil heating up C. protect the electronic governor from counter EMF D. act as a filter to prevent hunting

Description : In the illustration, the diode between terminals 16 and 17 is to _________. EL-0046 A. insure that the voltage across the governor coil (EG-3P) never exceeds .6 VDC B. compensate for the ... heating up C. protect the electronic governor from counter EMF D. act as a filter to prevent hunting

Last Answer : Answer: C

In the illustrated electronic governor, the circuit card connected to the potential and current transformers is for ________. EL-0046 A. increasing the signal strength to the governor to maintain constant engine speed with increased load B. send a kilowatt signal to the metering circuit C. shutting down the prime mover in the event of reverse power to protect from motorization D. conditioning the load through the use of a magnetic amplifier current transformer

Description : In the illustrated electronic governor, the circuit card connected to the potential and current transformers is for ________. EL-0046 A. increasing the signal strength to the governor to ... from motorization D. conditioning the load through the use of a magnetic amplifier current transformer

Last Answer : Answer: A

The kilowatt load can be adjusted on a paralleled generator by using the _____________. A. field rheostat B. governor control C. automatic voltage regulators D. hand tachometer

Description : The kilowatt load can be adjusted on a paralleled generator by using the _____________. A. field rheostat B. governor control C. automatic voltage regulators D. hand tachometer

Last Answer : Answer: B

When paralleling two AC generators, the frequency of the incoming machine immediately prior to closing its breaker should be ____________. A. controlled by placing the governor switch in the automatic position B. adjusted with the voltage regulator C. slightly greater than the bus frequency D. slightly less than the bus frequency

Description : When paralleling two AC generators, the frequency of the incoming machine immediately prior to closing its breaker should be ____________. A. controlled by placing the governor switch in the automatic ... regulator C. slightly greater than the bus frequency D. slightly less than the bus frequency

Last Answer : Answer: C

The KW load is evenly distributed between two alternators just placed in parallel by adjusting _____________. A. a balance coil B. the governor settings C. the field excitation D. a rheostat

Description : The KW load is evenly distributed between two alternators just placed in parallel by adjusting _____________. A. a balance coil B. the governor settings C. the field excitation D. a rheostat

Last Answer : Answer: B

If two AC generators have just been placed in parallel, the true power load is initially distributed evenly by _____________. A. a balance coil B. changing field excitation C. adjusting the governor control settings D. a rheostat

Description : If two AC generators have just been placed in parallel, the true power load is initially distributed evenly by _____________. A. a balance coil B. changing field excitation C. adjusting the governor control settings D. a rheostat

Last Answer : Answer: C

The device labeled 'REG SW' in the illustration is used to ___________. EL-0003 A. shift from the automatic voltage regulator to the manual voltage regulator B. shift the governor control from manual to automatic/zero droop C. enable the operator to read the field voltage on device 'REG ADJ' or device 'MAN ADJ' D. supply regulated control power to the switchboard

Description : The device labeled 'REG SW' in the illustration is used to ___________. EL-0003 A. shift from the automatic voltage regulator to the manual voltage regulator B. shift the governor control from manual to ... device 'REG ADJ' or device 'MAN ADJ' D. supply regulated control power to the switchboard

Last Answer : Answer: A

In the illustration, the component labeled 'EXC' is _______. EL-0003 A. a separate class II regulated DC generator for critical direct current loads B. a generator feeding the FLD winding through the voltage regulator. C. the controller to drive the governor for turbogenerator speed. D. the electronic driver for the switchboard metering circuits

Description : In the illustration, the component labeled 'EXC' is _______. EL-0003 A. a separate class II regulated DC generator for critical direct current loads B. a generator feeding the FLD ... to drive the governor for turbogenerator speed. D. the electronic driver for the switchboard metering circuits

Last Answer : Answer: B

If the driving torque, such as that produced by a diesel engine, creates pulsations when coupled with a synchronous generator operating in parallel; the generator rotor may be periodically pulled ahead or behind its normal position as it rotates. This hu A. amortisseur windings B. direct coupling C. increase governor speed droop D. decreasing governor speed droop

Description : If the driving torque, such as that produced by a diesel engine, creates pulsations when coupled with a synchronous generator operating in parallel; the generator rotor may be periodically pulled ... windings B. direct coupling C. increase governor speed droop D. decreasing governor speed droop

Last Answer : Answer: A

The voltage of an operating AC turbogenerator is raised or lowered by adjusting the _____________. A. exciter generator governor controls B. synchronizing switch C. phase sequence switch D. generator field exciter

Description : The voltage of an operating AC turbogenerator is raised or lowered by adjusting the _____________. A. exciter generator governor controls B. synchronizing switch C. phase sequence switch D. generator field exciter

Last Answer : Answer: D

The frequency of an alternator is controlled from the main switchboard by adjusting the _____________. A. frequency meter B. voltage regulator C. governor control D. sychroscope switch

Description : The frequency of an alternator is controlled from the main switchboard by adjusting the _____________. A. frequency meter B. voltage regulator C. governor control D. sychroscope switch

Last Answer : Answer: C

The frequency of an AC generator is controlled by the _____________. A. rheostat B. governor C. exciter D. capacitor

Description : The frequency of an AC generator is controlled by the _____________. A. rheostat B. governor C. exciter D. capacitor

Last Answer : Answer: B

The speed of a series wound winch motor is controlled by ____________. A. varying the voltage applied to the motor B. the weight of the load on the cargo boom C. overcurrent protection devices in the motor D. a hydraulic speed-limiting governor

Description : The speed of a series wound winch motor is controlled by ____________. A. varying the voltage applied to the motor B. the weight of the load on the cargo boom C. overcurrent protection devices in the motor D. a hydraulic speed-limiting governor

Last Answer : Answer: A

Equal power factors on paralleled AC generators are maintained by an automatic _____________. A. voltage regulator B. reverse power relay C. reverse current relay D. governor control switch

Description : Equal power factors on paralleled AC generators are maintained by an automatic _____________. A. voltage regulator B. reverse power relay C. reverse current relay D. governor control switch

Last Answer : Answer: A

The frequency of an AC generator is adjusted by means of the ____________. A. main alternator field rheostat B. exciter field rheostat C. prime mover governor control D. equalizing reactor

Description : The frequency of an AC generator is adjusted by means of the ____________. A. main alternator field rheostat B. exciter field rheostat C. prime mover governor control D. equalizing reactor

Last Answer : Answer: C

Which of the following will happen to the alternator frequency if the load is removed from a turbogenerator, whose governor has a 3% speed droop? A. It will remain unchanged. B. It will decrease by approximately 3%. C. It will become variable. D. It will increase.

Description : Which of the following will happen to the alternator frequency if the load is removed from a turbogenerator, whose governor has a 3% speed droop? A. It will remain unchanged. B. It will decrease by approximately 3%. C. It will become variable. D. It will increase.

Last Answer : Answer: D

Kilowatt load is divided between two AC generators operating in parallel by _____________. A. adjusting the governor controls B. varying the excitation voltage C. increasing both prime mover speeds simultaneously D. decreasing both prime mover speeds simultaneously

Description : Kilowatt load is divided between two AC generators operating in parallel by _____________. A. adjusting the governor controls B. varying the excitation voltage C. increasing both prime mover speeds simultaneously D. decreasing both prime mover speeds simultaneously

Last Answer : Answer: A