Analysis of Steam Engine MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Analysis of Steam Engine, a fundamental topic in the field of Power Plant Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Analysis of Steam Engine MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Analysis of Steam Engine mcq questions that explore various aspects of Analysis of Steam Engine problems. Each MCQ is crafted to challenge your understanding of Analysis of Steam Engine principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Power Plant Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Analysis of Steam Engine MCQs are your pathway to success in mastering this essential Power Plant Engineering topic.

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Analysis of Steam Engine MCQs | Page 18 of 27

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Q171.
The temperature rise from condenser to boiler saturation is divided __________ among the feedwater heaters for maximum gain in efficiency.

a.

unequally

b.

partially

c.

equally

d.

remains undivided

Discuss
Answer: (c).equally
Q172.
What is the expression for enthalpy of each heater hper heater if a represents the enthalpy of heated feedwater from the economiser and b represents the enthalpy at condenser & n represents the number of heaters?

a.

hper heater = (a-b)/ (n + 1)

b.

hper heater = (a-b) x (n โ€“ 1)

c.

hper heater = (a-b) + (n โ€“ 1)

d.

hper heater = (a-b) โ€“ (n + 1)

Discuss
Answer: (a).hper heater = (a-b)/ (n + 1)
Q173.
If n denotes the number of heater, tแดแด€ denotes the overall temperature difference & Tfw denotes the total temperature rise of feedwater. The expression for Tfw is?

a.

(n/(n+1)) x tแดแด€

b.

(n/(n-1)) x tแดแด€

c.

(n/(n+1)) / tแดแด€

d.

(n/(n+1)) โ€“ tแดแด€

Discuss
Answer: (a).(n/(n+1)) x tแดแด€
Q174.
The expression for the overall temperature difference Tแดแด€ is given by?

a.

tแดแด€ = boiler saturation temperature โ€“ condenser temperature

b.

tแดแด€ = boiler saturation temperature + condenser temperature

c.

tแดแด€ = boiler saturation temperature x condenser temperature

d.

tแดแด€ = boiler saturation temperature / condenser temperature

Discuss
Answer: (a).tแดแด€ = boiler saturation temperature โ€“ condenser temperature
Q175.
Efficiency gain follow the law of ____________

a.

diminishing forward motion

b.

increasing return

c.

decreasing return

d.

none of the mentioned

Discuss
Answer: (c).decreasing return
Q176.
The number of heaters for a plant is fixed by?

a.

Mass Balance

b.

Energy balance

c.

Heat balance

d.

None of the mentioned

Discuss
Answer: (b).Energy balance
Q177.
The effect on the degree of regeneration due to an increase in feedwater temperature is?

a.

degree of regeneration increases

b.

degree of regeneration decreases

c.

degree of regeneration remain same

d.

degree of regeneration is optimised

Discuss
Answer: (d).degree of regeneration is optimised
Q178.
The expression for efficiency when a & b are two constants corresponding to alpha & beta and c corresponds to gamma, is?

a.

Efficiency = 1 โ€“ ((b²))/((b + c)(a + b โ€“ c)))

b.

Efficiency = 1 + ((b²))/((b + c)(a + b โ€“ c)))

c.

Efficiency = ((b²))/((b + c)(a + b โ€“ c)))

d.

Efficiency = 1 / ((b²))/((b + c)(a + b โ€“ c)))

Discuss
Answer: (a).Efficiency = 1 โ€“ ((b²))/((b + c)(a + b โ€“ c)))
Q179.
What is the relation between a & c if a & c correspond to alpha & gamma respectively, for maximum efficiency of a cycle?

a.

a = 3c

b.

c = 2a

c.

c = (a/3)

d.

a = 2c

Discuss
Answer: (d).a = 2c
Q180.
The expression for efficiency gain due to regeneration if a, b, n correspond to alpha, beta, cycle efficiency respectively, is?

a.

n = ((a x a x b)/((a + b)(a + 2b)2))

b.

n = ((a x a x b)/((a โ€“ b)(a + 2b)²))

c.

n = ((a x a x b)/((a + b)(a + b)²))

d.

n = ((a x a x b)/((a + b)(a + 2b)³))

Discuss
Answer: (b).n = ((a x a x b)/((a + b)(a + 2b)²))
Page 18 of 27