The expression for efficiency when a & b are two constants corresponding to alpha & beta and c corresponds to gamma, is?

Efficiency = 1 + ((b2))/((b + c)(a + b c)))

Efficiency = 1 ((b2))/((b + c)(a + b c)))

Efficiency = 1 + ((b2))/((b + c)(a + b c)))

Efficiency = ((b2))/((b + c)(a + b c)))

Efficiency = 1 / ((b2))/((b + c)(a + b c)))

The expression for the overall temperature difference TOA is given by?

tOA = boiler saturation temperature + condenser temperature

tOA = boiler saturation temperature condenser temperature

tOA = boiler saturation temperature + condenser temperature

tOA = boiler saturation temperature x condenser temperature

tOA = boiler saturation temperature / condenser temperature

Explore topic-wise MCQs in Power Plant.

This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Power Plant knowledge and support exam preparation. Choose a topic below to get started.

1.	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
Answer» E.

Discussion

2.	The expression for efficiency when a & b are two constants corresponding to alpha & beta and c corresponds to gamma, is?
A.	Efficiency = 1 ((b<sup>2</sup>))/((b + c)(a + b c)))
B.	Efficiency = 1 + ((b<sup>2</sup>))/((b + c)(a + b c)))
C.	Efficiency = ((b<sup>2</sup>))/((b + c)(a + b c)))
D.	Efficiency = 1 / ((b<sup>2</sup>))/((b + c)(a + b c)))
Answer» B. Efficiency = 1 + ((b<sup>2</sup>))/((b + c)(a + b c)))

Discussion

3.	Efficiency gain follow the law of ____________
A.	diminishing forward motion
B.	increasing return
C.	decreasing return
D.	none of the mentioned
Answer» D. none of the mentioned

Discussion

4.	The expression for the overall temperature difference T_OA is given by?
A.	t<sub>OA</sub> = boiler saturation temperature condenser temperature
B.	t<sub>OA</sub> = boiler saturation temperature + condenser temperature
C.	t<sub>OA</sub> = boiler saturation temperature x condenser temperature
D.	t<sub>OA</sub> = boiler saturation temperature / condenser temperature
Answer» B. t<sub>OA</sub> = boiler saturation temperature + condenser temperature

Discussion

5.	If n denotes the number of heater, t_OA denotes the overall temperature difference & T_fw denotes the total temperature rise of feedwater. The expression for T_fw is?
A.	(n/(n+1)) x t<sub>OA</sub>
B.	(n/(n-1)) x t<sub>OA</sub>
C.	(n/(n+1)) / t<sub>OA</sub>
D.	(n/(n+1)) t<sub>OA</sub>
Answer» B. (n/(n-1)) x t<sub>OA</sub>

Discussion

6.	What is the expression for enthalpy of each heater h_{per 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.	h<sub>per heater</sub> = (a-b)/ (n + 1)
B.	h<sub>per heater</sub> = (a-b) x (n 1)
C.	h<sub>per heater</sub> = (a-b) + (n 1)
D.	h<sub>per heater</sub> = (a-b) (n + 1)
Answer» B. h<sub>per heater</sub> = (a-b) x (n 1)

Discussion

7.	The expression for temperature rise t in feedwater heater when a & b are the temperatures of boiler saturation & condenser respectively, is given by which of the following expression?
A.	t = 0.5 (a x b)
B.	t = 0.5 (a / b)
C.	t = 0.5 (a + b)
D.	t = 0.5 (a b)
Answer» E.

Discussion

8.	What is the value of beta if h represents the local enthalpy on the given expansion line at a given pressure & h_f is the enthalpy of saturated water at that pressure?
A.	h + h<sub>f</sub>
B.	h x h<sub>f</sub>
C.	h h<sub>f</sub>
D.	none of the mentioned
Answer» D. none of the mentioned

Discussion

Explore topic-wise MCQs in Power Plant.

What is the relation between a & c if a & c correspond to alpha & gamma respectively, for maximum efficiency of a cycle?

The expression for efficiency when a & b are two constants corresponding to alpha & beta and c corresponds to gamma, is?

Efficiency gain follow the law of ____________

The expression for the overall temperature difference TOA is given by?

If n denotes the number of heater, tOA denotes the overall temperature difference & Tfw denotes the total temperature rise of feedwater. The expression for Tfw is?

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?

The expression for temperature rise t in feedwater heater when a & b are the temperatures of boiler saturation & condenser respectively, is given by which of the following expression?

What is the value of beta if h represents the local enthalpy on the given expansion line at a given pressure & hf is the enthalpy of saturated water at that pressure?

The expression for the overall temperature difference T_OA is given by?

If n denotes the number of heater, t_OA denotes the overall temperature difference & T_fw denotes the total temperature rise of feedwater. The expression for T_fw is?

What is the expression for enthalpy of each heater h_{per 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?

What is the value of beta if h represents the local enthalpy on the given expansion line at a given pressure & h_f is the enthalpy of saturated water at that pressure?