Power Plant Engineering (PPE) MCQs | Page - 1

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Mr. Dubey • 100.64K Points
Coach

Q. All of the nuclear fuel reserve will be ended in about 400 years.

• (A) true
• (B) false
• (C) ---
• (D) ---

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Correct : Option (B)

Explanation:

there are larger deposits of nuclear fuel available all over the world. therefore, such plants can ensure continued supply of electrical energy for thousands of years.

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Mr. Dubey • 100.64K Points
Coach

Q. With respect to the load centre which location is suitable for stablishment of nuclear power plant?

• (A) load centre
• (B) near load centre but at reasonable distance
• (C) far away from load centre
• (D) near chemical industries

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Correct : Option (B)

Explanation:

these plants can be located near the load centre because of the negligible

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Mr. Dubey • 100.64K Points
Coach

Q. Operating cost of nuclear power plant is less than thermal power plant.

• (A) true
• (B) false
• (C) ---
• (D) ---

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Correct : Option (A)

Explanation:

cost of fuel in nuclear power plant is taken as the capital cost. the the total operating cost involves wages and the salaries of operating and maintenance staff only, cost of disposal of waste etc.. the cost of transport and handling of coal for conventional thermal power plant is much higher than the cost of nuclear fuel.

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Mr. Dubey • 100.64K Points
Coach

Q. What is the role of breaker house in coal feeding?

• (A) to break the coal into smaller pieces
• (B) to separate different sizes of coal
• (C) to separate the light dust from the coal
• (D) to powder the coal

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Correct : Option (C)

Explanation:

because of the brittle nature of the coal, it is a common nature of coal to emit light dust/coal dust during transportation, mining and machine handling. this dust needs to be cleared out and it is performed by coal breaker.

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Mr. Dubey • 100.64K Points
Coach

Q. Large amount of coal is transported by

• (A) railway
• (B) sea or river ways
• (C) road transportation
• (D) by airlifting

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Correct : Option (A)

Explanation:

the railway is preferred since it is quite economical as well as loading and unloading of coal is easy. and at stretch tons of coal can be transported by goods train from one place to another place. coal is considered as a bulk commodity value which falls in category of minerals and ores. if roadways

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Mr. Dubey • 100.64K Points
Coach

Q. The coal is fed to the furnace through

• (A) conveyor belt
• (B) wagon tipper
• (C) hopper
• (D) crane

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Correct : Option (C)

Explanation:

hopper is the conical shaped slow coal dispenser to the furnace. it is placed right above the furnace and a live feeder mechanism is set at end of hopper for a controlled flow. there is no requirement of any external power/force since this works on gravity force.

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Mr. Dubey • 100.64K Points
Coach

Q. What is the function of cyclone separators in pneumatic ash handling system?

• (A) to separate the lighter dust particles
• (B) to force up the movement of ash through pipes or tubes
• (C) to draw out the dust from furnace
• (D) to separate minute coal particles

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Correct : Option (A)

Explanation:

cyclone separators use air to swirl around the ash that has been dispensed into them. due to centrifugal action heavier ash settles down, where as lighter dust/ash particles is collected in hopper and dumped out. the air flows in helical pattern which makes easy for the heavier dust particle to settle down easily without interrupting the airflow.

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Mr. Dubey • 100.64K Points
Coach

Q. Which medium is used to carry ash in the pneumatic ash handling system?

• (A) conveyor belt
• (B) water trough
• (C) air
• (D) chain belt

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Correct : Option (C)

Explanation:

in pneumatic ash handling system, air is used to carry ash to long distance at a capacity of 5 to 30 tonnes per hour. and the air used for this purpose is easily cleanable and can be exhausted back into atmosphere after the complete filtration processes.

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Mr. Dubey • 100.64K Points
Coach

Q. Which system is noisy out of all the following ash handling systems?

• (A) steam jet ash handling system
• (B) mechanical ash handling system
• (C) pneumatic ash handling system
• (D) hydraulic ash handling system

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Correct : Option (C)

Explanation:

the air is made to pass at very high pressure in order to carry out the ash for long distance. since the air is moving at high speed at high velocity in the conveying pipes, it tends to create a lot of noise by hitting the walls of pipe at swift turns and curves.

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Mr. Dubey • 100.64K Points
Coach

Q. Which medium is used to carry ash in hydraulic system?

• (A) air
• (B) water
• (C) steam
• (D) conveyor

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Correct : Option (B)

Explanation:

water is used as the medium to carry ash at high velocity. depending on water pressure the system is divided as low pressure system and high pressure system. in low pressure system, sloped sumps are used to move the ash at low velocity and in high pressure system nozzle sprays used to ram up the speed of ash flow.

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