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Total Questions : 1124 | Page 107 of 113 pages
Question 1061. 4. For the same compression ratio
  1.    Otto Cycle is More Efficient Than The Diesel
  2.    Diesel Cycle Is More Efficient than Otto
  3.    Both Otto And Diesel Cycles Are Equally Efficient
  4.    Compression Ratio Has Nothing To Do With Efficiency
 Discuss Question
Answer: Option A. -> Otto Cycle is More Efficient Than The Diesel
Question 1062. 3. In a typical medium speed 4-stroke cycle diesel engine
  1.    Compression Starts At 35° After Bottom Dead Center And Ends At Top Dead Center
  2.    Compression Starts At Bottom Dead Center And Ends At Top Dead Center
  3.    Compression Starts At 10° Before Bottom Dead Center And, Ends Just Before Top Dead Center
  4.    May Start And End Anywhere
 Discuss Question
Answer: Option A. -> Compression Starts At 35° After Bottom Dead Center And Ends At Top Dead Center
Question 1063. 2. It the temperature of intake air in IC engines is lowered, then its efficiency will
  1.    Increase
  2.    Decrease
  3.    Remain Same
  4.    Increase upto Certain Limit And Then Decrease
 Discuss Question
Answer: Option A. -> Increase
Question 1064. 0. If one cylinder of a diesel engine receives more fuel than the others, then for that cylinder the
  1.    Exhaust Will Be Smoky
  2.    Piston Rings Would Stick Into Piston Grooves
  3.    Scavenging Occurs.
  4.    Engine Starts Overheating
 Discuss Question
Answer: Option C. -> Scavenging Occurs.
Question 1065. 1. The output of a diesel engine can be increased without increasing the engine revolution or size in following way
  1.    Feeding More Fuel
  2.    Increasing Flywheel Size
  3.    Supercharging
  4.    Scavenging
 Discuss Question
Answer: Option C. -> Supercharging
Question 1066. 5. The process of breaking up or a liquid into fine droplets by spraying is called
  1.    Vaporization
  2.    Carburettion
  3.    Atomisation
  4.    Injection
 Discuss Question
Answer: Option C. -> Atomisation
Question 1067. 6. As a result of detonation in an I.C. engine, following parameter attains very high value
  1.    Peak Pressure
  2.    Rate Of Rise Of Pressure
  3.    Rate Of Rise Of Temperature
  4.    Peak Temperature
 Discuss Question
Answer: Option B. -> Rate Of Rise Of Pressure
Question 1068. 8. Most high speed compression engines operate on
  1.    Diesel Cycle
  2.    Otto Cycle
  3.    Dual Combustion Cycle
  4.    Special Type Of Air Cycle
 Discuss Question
Answer: Option C. -> Dual Combustion Cycle
Question 1069. 7. Which of the following statements is correct?
  1.    All The Irreversible Engines Have Same Efficiency
  2.    All The Reversible Engines Have Same Efficiency
  3.    Both Rankine And Carnot Cycles Have Same Efficiency Between Same Temperature Limits
  4.    All Reversible Engines Working Between Same Temperature Limits Have Same-Efficiency
 Discuss Question
Answer: Option D. -> All Reversible Engines Working Between Same Temperature Limits Have Same-Efficiency
Question 1070. 1. The air-fuel ratio of the petrol engine is controlled by
  1.    Fuel Pump
  2.    Governor
  3.    Injector
  4.    Carburetor
 Discuss Question
Answer: Option D. -> Carburetor

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