Power Plant Systems

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Quizzes Created: 7 | Total Attempts: 9,781

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1/10 Questions

In steam power generation,what is IGCC means.
- Integrated Geothermal Complete Cycle
- Integrated Gas Combined Cycle
- Integrated Gasification Combined Cycle
- International Gasification Combined unit Cycle

About This Quiz

Explore key components of steam power generation in the 'Power Plant Systems' quiz. Understand technologies like IGCC, roles of prime movers, and the impact of non-condensable gases on efficiency. Essential for students and professionals in engineering and energy sectors.

2.

An engine or turbine that moves the generator.
- Propeller
- Prime mover
- Condenser
- Shafting
Correct Answer

A. Prime mover

Explanation

A prime mover refers to an engine or turbine that is responsible for providing the initial mechanical energy required to move the generator. It is the component that converts a form of fuel or energy into mechanical energy, which is then used to drive the generator and produce electricity. In this context, the prime mover acts as the primary source of power for the generator, enabling it to function and generate electricity.

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3.

This is the reduction gear between the prime mover and generator.
- Load gear
- Reduction gear
- Bevel gear
- Clutch
Correct Answer

A. Load gear

Explanation

The given correct answer is "Load gear". This suggests that the gear mentioned in the question is responsible for carrying the load between the prime mover and the generator. It implies that the load gear is designed to reduce the speed and increase the torque of the system, allowing for efficient power transmission. The load gear is an essential component in the overall gear system, ensuring smooth and effective operation between the prime mover and the generator.

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4.

A steam turbine that exhausts directly into a condenser at below atmospheric pressure.
- Back pressure turbine
- Condensing turbine
- Extraction turbine
- High pressure turbine
Correct Answer

A. Condensing turbine

Explanation

A condensing turbine is the correct answer because it exhausts directly into a condenser at below atmospheric pressure. This type of turbine is designed to maximize the efficiency of the power generation process by extracting as much energy as possible from the steam. The low pressure in the condenser allows for the steam to be condensed back into water, which can then be recycled and used again in the steam cycle. This design is commonly used in power plants to generate electricity.

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5.

In a steam turbine generator, it is also known as bleed.
- Extraction
- Exhausts
- Excess
- Extrusion
Correct Answer

A. Extraction

Explanation

In a steam turbine generator, extraction refers to the process of removing a portion of the steam from the turbine at intermediate stages. This extracted steam can then be used for other purposes such as heating or industrial processes. It helps to optimize the efficiency of the overall system by utilizing the excess steam that would otherwise be wasted.

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6.

NCG which is always present in geothermal steam, causes power plant inefficiencies that result in increased steam consumption and higher plant costs. What NCG does mean?
- Nitrogen Condenser gas
- Non-Condensable gas
- No Condensate gas
- New Condensed gas
Correct Answer

A. Non-Condensable gas

Explanation

NCG stands for Non-Condensable gas. In geothermal steam, NCG refers to gases that cannot be condensed into a liquid state. These gases are always present in the steam and can cause inefficiencies in power plants. They lead to increased steam consumption and higher costs for the plant.

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1
7.

For a boiler plate, what would be the minimum plate thickness considering a 1/16" corrosion allowance.
- 1/4"
- 3/4"
- 5/16"
- 3/16"
Correct Answer

A. 5/16"

Explanation

The minimum plate thickness for a boiler plate should consider a corrosion allowance of 1/16". This means that the actual thickness of the plate should be 1/16" more than the required minimum thickness. Among the given options, the closest thickness to the required minimum thickness with the corrosion allowance is 5/16". Therefore, 5/16" would be the correct answer.

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8.

In Superheater operation the steam piping is directed through the flue gas path in the boiler furnace. The temperature in this area is typically ranging from.
- 1300-1600 C
- 1350-1700 C
- 1100-1200 C
- 900-1000 C
Correct Answer

A. 1300-1600 C

Explanation

In Superheater operation, the steam piping is directed through the flue gas path in the boiler furnace. The temperature in this area is typically ranging from 1300-1600°C.

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9.

It is used to relieve pressure and prevent possible explosion of the boiler.
- Shut off valve
- Safety valve
- Bull valve
- Fuel valve
Correct Answer

A. Safety valve

Explanation

The safety valve is used to relieve pressure and prevent possible explosion of the boiler. When the pressure inside the boiler exceeds a certain limit, the safety valve automatically opens, allowing excess steam to escape and reducing the pressure. This helps to protect the boiler from damage and ensures the safety of the surrounding environment and personnel.

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10.

It is a mechanical means that is used to turn off the burner or shut off fuel to the boiler to prevent it from running, once the water goes below a certain point.
- Shut off valve
- Low-water cut-off valve
- Water level indicators
- Automatic blowdown
Correct Answer

A. Low-water cut-off valve

Explanation

A low-water cut-off valve is a mechanical device that is installed in a boiler system to automatically shut off the burner or fuel supply when the water level in the boiler drops below a certain point. This is important because if the water level gets too low, it can cause damage to the boiler and potentially lead to a dangerous situation. The low-water cut-off valve helps to prevent this by ensuring that the boiler is not able to operate when the water level is too low.

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Current Version
Mar 20, 2023

Quiz Edited by
ProProfs Editorial Team
Apr 10, 2012

Quiz Created by
Enriv

Power Plant Systems

In steam power generation,what is IGCC means.

Quiz Preview

An engine or turbine that moves the generator.

This is the reduction gear between the prime mover and generator.

A steam turbine that exhausts directly into a condenser at below atmospheric pressure.

In a steam turbine generator, it is also known as bleed.

NCG which is always present in geothermal steam, causes power plant inefficiencies that result in increased steam consumption and higher plant costs. What NCG does mean?

For a boiler plate, what would be the minimum plate thickness considering a 1/16" corrosion allowance.

In Superheater operation the steam piping is directed through the flue gas path in the boiler furnace. The temperature in this area is typically ranging from.

It is used to relieve pressure and prevent possible explosion of the boiler.

It is a mechanical means that is used to turn off the burner or shut off fuel to the boiler to prevent it from running, once the water goes below a certain point.