Engineering thermodynamics top mcqs

 

 TOP MCQ

APPLIED THERMODYNAMICS OBJECTIVE TYPES QUESTIONS WITH ANSWERS.

Here may be a list of Top MCQ of Applied Thermodynamics Objective Type Questions And Answers provided for the AKTU and ALL OTHER UNIVERSITIES EXAMINATIONS . All the MCQ questions are most vital for AKTU especially. These sort of Objective questions are going to be asked in Diploma and Degree Internal Examinations.

1. The version produced by a steel chimney is in contrast to the version made by a brick chimney for the same height.

(a) less

(b) more

(c) the same

(d) may be more or less

 

2. In boiler installation the natural version is removed

(a) because light furnace gases pass through the chimney allowing cold air from outside to enter

(b) because the grip pressure due to a cold column is higher than the pressure at the bottom of the chimney due to a hot column

(c) because the pressure at the top of the chimney is greater than the environmental pressure

(d) all of the above

 

3. Extracted version, for certain chimney height and average chimney gas temperature

(a) decreases with increasing outdoor air temperatures

(b) increases with increasing outdoor air temperatures

(c) remain the same regardless of the outside air temperature

(d) may increase or decrease with an increase in the temperature of the outside air

4. The version made by a chimney of a certain height at a certain outside temperature

(a) decreases if the chimney gas temperature rises

(b) goes up if the chimney gas temperature rises

(c) remain the same regardless of the chimney gas temperature

(d) may increase or decrease

 

5. For a forced system version, chimney work is predominant

(a) draw up a form to accelerate fuel

(b) the release of gases above into the atmosphere to avoid danger

(c) to reduce the temperature of the released hot gases

(d) none of the above

 

6. A pseudo-version is produced by

(a) stay motivated

(b) stay emergency

(c) remain motivated and compelled

(d) all of the above

7. The version in locomotive boilers is extracted by

(a) stay alert

(b) similear

(c) steam jet

(d) direct movement of locomotives

 

8. For the same version issued the fan power is draft inspired as opposed to emergency fan version.

(a) less

(b) more

(c) the same

(d) not expected

 

9. A pseudo-version is derived by

(a) air fans

(b) steam jet

(c) steam fan or jet

(d) all of the above

 

10. The artificial version is usually designed to produce

(a) less smoke

(b) more draft

(c) lower chimney gas temperature

(d) all of the above

 

11. For the inspired version the fan is set

(a) near the bottom of the chimney

(b) near the bottom of the furnace

(c) at the top of the chimney

(D) any space allowed

 

12. The pressure of the furnace is at least unknown

(a) a version of a compulsory system

(b) draft system of incentives

(c) a fair system design

(d) the appearance of a natural system

 

13. Chimney efficiency is all around

(a) 80%

(b) 40%

(c) 20%

(d) 0.25%

 

14. The isentropic expansion of steam through a nozzle for the steam heated at the inlet is almost equal.

(a) pvls = C.

(b) pv1126 = C.

(c) pv1A = C.

(d) pv = C.

 

15. The ratio of exhaust pressure to inlet pressure is for the maximum flow rate per unit of steam through a nozzle when steam is first dry.

(a) 0.6

(b) 0.578

(c) 0.555

(d) 0.5457

 

16. ​​The ratio of leaving pressure to pressure into the maximum flow rate for each range of steam through a nozzle when steam is first heated

(a) 0.555

(b) 0.578

(c) 0.5457

(d) 0.6

 

17. The critical pressure ratio of a convergent nozzle is defined as

(a) the ratio of weight to external circulating pressure

(b) the ratio of outward pressure to inward pressure except where the high flow rate per unit area is at least

(c) the ratio of external pressure to inward pressure except when high flow rate = c

 

18. The isentropic expansion of steam through a nozzle for the steam first dried at heel is near equation.

(a) pv = C.

(b) pv1A = C.

(c) pv1i = C.

(d) pv

 

19. The effect of considering fracture loss in steam pressure for the same weight ratio leads to

(a) an increase in the distance left from the nose

(b) reduction in exit distance from the nose

(c) no change in the distance from the nose

(d) increase or decrease in steam quality

20. The effect of considering friction in steam sticks for the same weight ratio leads to

(a) increase in exit steam dryness

(b) reduction in exit steam dryness

(c) no change in exhaust steam quality

(d) reduction or increase in the degree of exhaustion of exhaust fumes in accordance with indoor quality

 

21. In case of steam turbine

(a) enthalpy collapse in fixed and mobile plates

(b) enthalpy fall only occurs in movable blades

(c) there is an enthalpy fall in cigarettes

(d) none of the above

 

22. The pressure on both sides of a steam turbine impulse wheel

(a) is the same

(b) different

(c) elevation from one side to the other

(d) descending from one side to the other

 

23. In De Laval steam turbine

(a) the pressure in the rotor of the turbine is about the same as that of the con¬denser

(b) the pressure in the rotor of the turbine is higher than the pressure in the con¬denser

(c) the pressure in the rotor of the turbine gradually decreases from heel to exit from condenser

(d) any of the above

 

24. Incorporation of reciprocating steam turbine

(a) enthalpy collapse is present in both fixed and movable plates

(b) enthalpy drop only occurs in fixed plates

(c) there is enthalpy fall only in movable blades

(d) none of the above

 

25. Curtis turbine

(a) reactor steam turbine

(b) pressure mixed steam turbine

(c) pressure steam turbine

(d) complex tension steam turbine

 

26. Rateau steam turbine

(a) reactor steam turbine

(b) complex tension steam turbine

(c) pressure steam turbine

(d) faster steam turbine

 

27. Parson turbine

(a) a weighted steam turbine

(b) simple wheel, steam turbine

(c) single-wheel response steam turbine

(d) multi-wheel reciprocating steam turbine                  

 

28. For a Parson reactor steam turbine, the rate of refraction

(a) 75%

(b) 100%

(c) 50%

(d) 60%

 

29. Reheating factor in steam turbines is dependent

(a) exit pressure only

(b) level efficiency only

(c) initial pressures and temperature only

(d) all of the above

 

30. Heating factor value usually varies from

(a) 0.5 to 0.6

(b) 0.9 to 0.95

(c) 1.02 to 1.06

(d) 1.2 to 1.6