IMPULSE TURBINE

IMPULSE TURBINE
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IMPULSE TURBINE: Schematic of impulse steam turbine is shown in Fig. It has single-stage having a nozzle fitted in the casing followed by ring of moving blades mounted on the shaft. Variation of velocity and pressure along the axis of turbine is also shown here. Here pressure drop occurs only in the nozzle and ideally no pressure drop occurs in blades. High pressure steam from boiler enters the nozzle through piping and leaves nozzle at predefined angle so as to smoothly flow over the moving blades. Steam velocity gets increased during its flow through nozzle due to its expansion occurring in it. During the passage of steam over the moving blades steam undergoes change in its’ direction while losing the velocity and thus causing rotation of moving blade ring mounted on shaft


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Related questions

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.

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.  

Explain principle of working of Impulse steam turbine with neat sketch.

Description : Explain principle of working of Impulse steam turbine with neat sketch.

Last Answer : Construction: Impulse turbine is simpler, less expensive and does not need to be pressure proof. It can operate with any pressure stream but is considerably less efficient. Impulse turbine consist of one ... by one set of moving blade ring as shown in Fig. for a single stage impulse turbine.

Difference between Impulse turbine and Reaction turbine.

Description : Difference between Impulse turbine and Reaction turbine.

Last Answer : Impulse turbine Reaction turbine 1. Steam completely expands in nozzle and pressure remains constant during flow through the blade passage.2. Relative velocity of steam passing over blade of impulse ... more space per unit power. 6.The blades are aerofoil & non symmetrical type.

A standard switching impulse has:

Description : A standard switching impulse has: a. A time to peak T p of 250 µs and a time to half-value T2 of 2500 µs b. A time to peak T p of 1.2 µs and a time to half-value T2 of 50 µs c. A time to peak T p of 0.25 ... half-value T2 of 2.5 s d. A time to peak T p of 0.12 s and a time to half-value T2 of 0.5 s 

Last Answer : A standard switching impulse has: a. A time to peak T p of 250 µs and a time to half-value T2 of 2500 µs b. A time to peak T p of 1.2 µs and a time to half-value T2 of 50 µs c. A time to peak T p of 0.25 ... -value T2 of 2.5 s d. A time to peak T p of 0.12 s and a time to half-value T2 of 0.5 s 

Why is a shaft coupler used between turbine and generator ?

Description : Why is a shaft coupler used between turbine and generator ?

Last Answer : For easy transmission torque or rotation angle and can also use for the protection of the safety devices shaft cannot be separated from the shaft during motion coupling will be damaged first so as avoid to the damaged of motor or other transmission parts.

Describe with neat labeled diagram measurement of flow using turbine flow meter.

Description : Describe with neat labeled diagram measurement of flow using turbine flow meter.

Last Answer : Explanation: - Turbine flow meter s are volumetric flow meters and are available in wide ranges. The output is usually in the form of a digital electrical signal whose frequency is directly ... totalized by a counter to give the value of total flow over a particular interval of time.

Describe the operation of turbine flow meter.

Last Answer : Explanation: - Turbine flow meters are volumetric flow meters and are available in wide ranges. The output is usually in the form of a digital electrical signal whose frequency is directly proportional to ... by a counter to give the value of total flow over a particular interval of time.

Draw and explain the working principle of turbine type flow meter. Mention its Application area.

Description : Draw and explain the working principle of turbine type flow meter. Mention its Application area.

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Compounding of steam turbine

Description : Compounding of steam turbine

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Difference between open and closed cycle gas turbine.

Description : Difference between open and closed cycle gas turbine.

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Turbine used for low head is?

Last Answer : Turbine used for low head is Kaplan turbine.

If you did some goofy, impulse, online shopping during the first year of the pandemic, what is your favorite item?

Description : If you did some goofy, impulse, online shopping during the first year of the pandemic, what is your favorite item?

Last Answer : Nothing goofy, but we got a new living room set.

Are inclinations an impulse?

Description : Are inclinations an impulse?

Last Answer : I think inclinations are pre impulse. I believe that we have genetic predilections that social and physical conditions can initiate. Drives, such as hunger, generate angst drawing the attention of ... required to be inclined to focus upon the desire's preferred object. Inclination is sufficient.

What impulse would make someone make jokes about the earthquake-tsunami disaster in Japan?

Description : What impulse would make someone make jokes about the earthquake-tsunami disaster in Japan?

Last Answer : I think it’s the I’d rather laugh than cry thing. They’re covering up the pain by trying to make a joke.

Where does the impulse to "sweep it under the rug" come from? Is this a helpful impulse?

Description : Where does the impulse to "sweep it under the rug" come from? Is this a helpful impulse?

Last Answer : Shame almost never works I have that sweep it under the rug' impulse too, it's been instilled in me from 40 years of conditioning from my family. When I was seeing a counselor to work through issues ( ... only my happiness, but that of those around me so I CHOOSE to face my problems head on now.

How strong is your impulse to have a biological child?

Description : How strong is your impulse to have a biological child?

Last Answer : I do have a desire to have a biological child. It's not that strong, but it would be nice. However, since I am gay, that is going to be a lot less likely to happen. If only two men could have a child ... being what I do, I won't be surprised. I do know that I want to have kids eventually. Male, 17

Impulse can be obtained from a.force-time diagram b.velocity-time diagram c.107 dynes d.force displacement diagram e.velocity-displacement diagram

Description : Impulse can be obtained from a.force-time diagram b.velocity-time diagram c.107 dynes d.force displacement diagram e.velocity-displacement diagram

Last Answer : a. force-time diagram

A body is pushed with a force of 10 N for 0.5 second. The impulse given to the body is a.107 dynes b.50 Ns c.3.5 Ns d.5 Ns e.2.5 Ns

Description : A body is pushed with a force of 10 N for 0.5 second. The impulse given to the body is a.107 dynes b.50 Ns c.3.5 Ns d.5 Ns e.2.5 Ns

Last Answer : d. 5 Ns

Write a and b in the given flow chart of neuron through which information travels as an electrical impulse.Dendrite → a →b → End point of Neuron -Science

Description : Write a and b in the given flow chart of neuron through which information travels as an electrical impulse.Dendrite → a →b → End point of Neuron -Science

Last Answer : a. Axon b. Cell body

Explain the mechanism of generation of light-induced impulse in the retina. -Biology

Description : Explain the mechanism of generation of light-induced impulse in the retina. -Biology

Last Answer : answer:

Explain the mechanism through which a sound produces a nerve impulse in the inner ear. -Biology

Description : Explain the mechanism through which a sound produces a nerve impulse in the inner ear. -Biology

Last Answer : answer:

What is the difference between impulse conduction in a myelinated nerve fibre and unmyelinated nerve fibre? -Biology

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Last Answer : answer:

Mechanism of generation of light-induced impulse in the retina. -Biology

Description : Mechanism of generation of light-induced impulse in the retina. -Biology

Last Answer : answer:

Assertion `:` Though AV node generates impulses, it is still not called as the pacemaker of heart. Reason `:` The rythmicity of impulse production is

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The cardiac impulse is initiated and conducted further upto ventricle. The correct sequence of conduction of impulse is

Description : The cardiac impulse is initiated and conducted further upto ventricle. The correct sequence of conduction of impulse is

Last Answer : The cardiac impulse is initiated and conducted further upto ventricle. The correct sequence of conduction of impulse is

The impulse for voluntary muscles for forced breathing starts in

Description : The impulse for voluntary muscles for forced breathing starts in

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If a force F =500-100t, then impulse as a function of time will be :-

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A body of mass `(1)/(4) kg` moving with velocity `12 m//s` is stopped by applying a force of 0.6 N. Then impulse is :-

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Description : Direction of nerve impulse is reversed in nerve with

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Type of synapse in which transmission of impulse across neuron is similar to conduction along a single axon

Description : Type of synapse in which transmission of impulse across neuron is similar to conduction along a single axon

Last Answer : Type of synapse in which transmission of impulse across neuron is similar to conduction along a single axon

Type of synapse in which transmission of impulse across neuron is similar to conduction along a single axon

Description : Type of synapse in which transmission of impulse across neuron is similar to conduction along a single axon

Last Answer : Type of synapse in which transmission of impulse across neuron is similar to conduction along a single axon

What term refers to the unconscious exclusion of painful impulse desires and fears from the conscious mind?

Description : What term refers to the unconscious exclusion of painful impulse desires and fears from the conscious mind?

Last Answer : Need answer

When a bat hits a ball the impulse is?

Description : When a bat hits a ball the impulse is?

Last Answer : It is equivalent to the change in momentum of the ball.

What structures transmit the heart impulse from the av node to the ventricle?

Description : What structures transmit the heart impulse from the av node to the ventricle?

Last Answer : Bundle of Hisatrioventicular bundle (bundle of his), right and left bundle bramches and the purkinge conducition fibers

What will happen to force if impulse triples and time one-thirds?

Description : What will happen to force if impulse triples and time one-thirds?

Last Answer : 1x

What is the formula Impulse x time?

Description : What is the formula Impulse x time?

Last Answer : Feel Free to Answer

How does body temperature affect the conduction speed of an electrical impulse?

Description : How does body temperature affect the conduction speed of an electrical impulse?

Last Answer : What is the answer ?

When an impulse reach the end of the axon the axon releases?

Description : When an impulse reach the end of the axon the axon releases?

Last Answer : Neurotransmitters to the synapse and the neurotransmitters bindwith the receptors releasing the second messengers.

How does a sensory impulse move throughout the body?

Description : How does a sensory impulse move throughout the body?

Last Answer : What is the answer ?

What statement describes a person making a risky health decision as a result of an impulse?

Description : What statement describes a person making a risky health decision as a result of an impulse?

Last Answer : Need answer

What will happen to force if impulse triples and time one-thirds?

Description : What will happen to force if impulse triples and time one-thirds?

Last Answer : 1x

What is equal to an impulse of 20 units?

Description : What is equal to an impulse of 20 units?

Last Answer : Force=25,time=0.8Force=0.1time=200Force=10,time=2

When the electric impulse travels along the axon and reaches the other end called the synaptic terminal, this impulse triggers the release of – (1) Vesicles (2) Cleft (3) Mitochondria (4) All of the above

Description : When the electric impulse travels along the axon and reaches the other end called the synaptic terminal, this impulse triggers the release of – (1) Vesicles (2) Cleft (3) Mitochondria (4) All of the above

Last Answer : (1) Vesicles Explanation: The electrical impulses stimulate the release of vesicles. These store various neurotransmitters that are released at the synapse. Vesicles are essential for propagating nerve impulses between neurons and are constantly recreated by the cell.

"Sodium Pump" operates in - (1) Muscle contraction (2) Heart beat (3) Nerve impulse (4) None of the above

Description : "Sodium Pump" operates in - (1) Muscle contraction (2) Heart beat (3) Nerve impulse (4) None of the above

Last Answer : (3) Nerve impulse Explanation: Na+/K+-ATPase (also known as sodium-potassium pump) is an enzyme located in the plasma them brane of virtually every human cell and is common to all cellular ... are voltagegated, which means that they can open and close depending on the voltage across the membrane.

(4) Liquid Hydrogen + Liquid Oxygen Explanation: LOX and liquid hydrogen, used in the Space Shuttle orbiter, the Centaur upper stage of the Atlas V, Saturn V upper stages, the newer Delta IV rocket, the H-IIA rocket, and most stages of the European Ariane rockets. Liquid fueled rocicets have higher specific impulse than solid rockets and are capable of being throttled, shut down, and restarted. Only the combustion chamber of a liquid fueled rocket needs to withstand high combustion pressures and temperatures and they can be regeneratively cooled by the liquid propellant.

Description : (4) Liquid Hydrogen + Liquid Oxygen Explanation: LOX and liquid hydrogen, used in the Space Shuttle orbiter, the Centaur upper stage of the Atlas V, Saturn V upper stages, the ... to withstand high combustion pressures and temperatures and they can be regeneratively cooled by the liquid propellant.

Last Answer : The BOD values of water indicate the (1) amount of organic debris (2) amount of oxygen used for biochemical oxidation (3) amount of oxygen used for biochemical reduction (4) amount of ozone used for biochemical oxidation

The rate of change of linear momentum of a body falling freely under gravity is equal to it's (1) Kinetic Energy (2) Weight (3) Potential Energy (4) Impulse

Description : The rate of change of linear momentum of a body falling freely under gravity is equal to it's (1) Kinetic Energy (2) Weight (3) Potential Energy (4) Impulse

Last Answer : (2) Weight Explanation: Rate of change of impulse equals the force. In case of freely falling body the only force is the weight.

Out of the following pairs, which one does not have identical dimension? (1) Moment of inertia and moment of a force (2) Work and Torque (3) Angular momentum and Planck's constant (4) Impulse and Momentum

Description : Out of the following pairs, which one does not have identical dimension? (1) Moment of inertia and moment of a force (2) Work and Torque (3) Angular momentum and Planck's constant (4) Impulse and Momentum

Last Answer : (1) Moment of inertia and moment of a force