Discussion
Home ‣ Mechanical Engineering ‣ Steam Boilers and Engines See What Others Are Saying!
- Question
When the speed of the engine is controlled by means of a valve in a steam pipe, which regulates the pressure of steam entering the engine, then the governing is known as
Options- A. throttle governing
- B. cut-off governing
- C. by-pass governing
- D. none of these
- Correct Answer
- throttle governing
- 1. The shrinkage allowance for cast iron pattern is
Options- A. 10 mm/m
- B. 16 mm/m
- C. 20 mm/m
- D. 26 mm/m Discuss
- 2. The __________ point of ammonia is -77.7°C.
Options- A. freezing
- B. boiling Discuss
- 3. The power transmitted through the nozzle is maximum when the head lost due to friction in the pipe is __________ of the total supply head.
Options- A. one-half
- B. one-third
- C. two-third Discuss
- 4. The actual volume of air delivered by a compressor, When reduced to the normal temperature and pressure conditions is called compressor capacity.
Options- A. Yes
- B. No Discuss
- 5. In ideal machines, mechanical advantage is __________ velocity ratio.
Options- A. equal to
- B. less than
- C. greater than Discuss
- 6. Sulphur in cast iron
Options- A. makes the iron soft and easily machinable
- B. increases hardness and brittleness
- C. makes the iron white and hard
- D. aids fusibility and fluidity Discuss
- 7. The state of a substance whose evaporation from its liquid state is partial, is known as steam.
Options- A. Agree
- B. Disagree Discuss
- 8. The coefficient of performance of a domestic refrigerator is __________ as compared to a domestic air-conditioner.
Options- A. same
- B. less
- C. more Discuss
- 9. In the casing of a centrifugal pump, the kinetic energy of the water is converted into pressure energy before the water leaves the casing.
Options- A. True
- B. False Discuss
- 10. The speed of a turbine runner is
Options- A. directly proportional to H1/2
- B. inversely proportional to H1/2
- C. directly proportional to H3/2
- D. inversely proportional to H3/2 Discuss
More questions
Correct Answer: 10 mm/m
Correct Answer: freezing
Correct Answer: one-third
Correct Answer: No
Correct Answer: equal to
Correct Answer: increases hardness and brittleness
Correct Answer: Disagree
Correct Answer: less
Correct Answer: True
Correct Answer: directly proportional to H1/2
Comments
There are no comments.More in Mechanical Engineering:
Automobile EngineeringCompressors, Gas Dynamics and Gas TurbinesEngineering MaterialsEngineering MechanicsHeat Transfer, Refrigeration and Air ConditioningHydraulic MachinesHydraulics and Fluid MechanicsIC Engines and Nuclear Power PlantsIndustrial Engineering and Production ManagementMachine DesignProduction EngineeringSteam Boilers and EnginesSteam Nozzles and TurbinesStrength of MaterialsTheory of machinesThermodynamicsWorkshop TechnologyProgramming
Copyright ©CuriousTab. All rights reserved.