Steam Engines MCQ

Steam Engines MCQ

Steam Engines MCQ, Multiple Choice Questions on Steam Engines, Engineering MCQ, Basic Mechanical Engineering MCQ, MCQ on Steam Engines, MCQ on Reciprocating Machines

Objective Type Questions

Q.1. A steam engine works on

  • Carnet cycle
  • Rankine cycle
  • Modified Rankine cycle
  • Regenerative cycle 

Answer: Rankine cycle

Q.2. For a steam engine diagram factor is defined as

  • Area of hypothetical indicator diagram x area of actual indicator diagram
  • Area of actual indicator diagram/Area of theoretical indicator diagram
  • Area of indicator diagram/Area of actual indicator diagram
  • None of above 

Answer: Area of actual indicator diagram/Area of the theoretical indicator diagram

Q.3. The function of a D-slide valve in a steam engine is

  • only to exhaust steam from cylinder
  • only to admit steam from cylinder
  • to admit and also exhaust steam from cylinder
  • None of above   

Answer: to admit and also exhaust steam from the cylinder

Q.4. In a steam engine

  • piston rod is connected to cross head by gudgeon pin
  • Connecting rod is connected to crankshaft by gudgeon pin
  • Connecting rod is connected to piston by gudgeon pin
  • Connecting rod is connected to cross head by gudgeon pin

Answer: Connecting rod is connected to the piston by a gudgeon pin

Q.5. In a steam engine, the cut-off ratio is the ratio of volume at cut-off to the…

  • Swept Volume
  • Cylinder Volume
  • Clearance Volume
  • All of above

Answer: Swept Volume

Q.6. In a steam engine the clearance ratio is the ratio of clearance volume to

  • Swept Volume
  • Cut-off Volume
  • Cylinder Volume  
  • None of above 

Answer: Swept Volume

Q.7. In a steam engine, the piston has….. motion.

  • Rotating
  • Reciprocating
  • Oscillating
  • None of above 

Answer: Reciprocating

Q.8. In cut-off governing in steam engine…… is varied

  • Super heat of steam
  • Volume of intake steam
  • Pressure of intake steam
  • Dryness fraction

Answer: Dryness fraction

Q.9. William’s line for the steam engine is the straight-line relationship between the mass rate of steam flow and

  • IHP
  • BHP
  • Efficiency
  • Compression ratio
  • Inlet pressure of steam

Answer: IHP

Q.10. A compound steam engine is one in which

  • Steam expands twice
  • Two engines are combined together
  • Major parts are repeated twice
  • Two units are put together  
  • Steam expands in several stages 

Answer: Steam expands twice

Q.11. In the tandem compound steam engine, the axes of the two cylinders

  • are 90° to each other
  • are inclined at 45°
  • are in the same straight line
  • lie in different planes
  • none of the above  

Answer: are in the same straight line

Q.12. In receiver type of compounding, the cranks are placed

  • 45° apart
  • 90° apart
  • are set at 90°
  • 270° apart
  • 360° apart

Answer: 90° apart

Q.13. In a tandem compound engine, the high pressure and low-pressure cylinders

  • have a common piston rod
  • have separate piston rods
  • are set at 90°
  • are set in V-arrangement
  • have no piston rod

Answer: have a common piston rod

Q.14. In Woolfe type as well as receiver type compound engines, the high pressure, and low pressure cylinders

  • have common piston rod
  • have separate piston rods
  • are set at 90°
  • are set in V-arrangement
  • have no piston rod

Answer: have separate piston rods

Q.15. The cranks of high pressure and low-pressure cylinders in a Woolfe type compound steam engine are placed

  • 0° apart
  • 45° apart
  • 90° apart
  • 180° apart
  • 270° apart

Answer: 180° apart

Q.16. In tandem type compound steam engines the cranks are placed

  • 0° apart
  • 45° apart
  • 90° apart
  • 180° apart
  • 270° apart

Answer: 90° apart

Q.17. The function of the piston is to

  • transfer motion from piston to crosshead
  • transfer motion from piston to connecting rod
  • provide reciprocating motion to slide valves
  • to control cut-off point

Answer: transfer motion from piston to the crosshead

Q.18. The function of an eccentric rod in steam engine is to:

  • convert rotary motion of crankshaft into to and fro motion of the valve rod
  • provide SHM to D-slide valve
  • impart sliding motion to slide valve
  • convert reciprocating motion to rotary motion
  • adjust and control cut-off point 

Answer: convert rotary motion of crankshaft into to and fro motion of the valve rod

Q.19. The function of a valve rod in steam engines is to

  • convert rotary motion of crankshaft into to and fro motion of the valve rod
  • provide SHM to D-slide valve
  • impart sliding motion to slide valve
  • convert reciprocating motion to rotary motion
  • adjust and control cut-off point 

Answer: provide SHM to D-slide valve

Q.20. The main function of a stuffing box in a steam engine is to:

  • guide the piston rod
  • receive steam from engine
  • operate valve in proper sequence
  • prevent leakage
  • minimise the missing quantity

Answer: minimise the missing quantity

Engineering Thermodynamics MCQ

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