Mechanical Engineering Mcqs

The knocking in diesel engines for given fuel, will be__________________?
  • (A)  enhanced by increasing compression ratio
  • (B)  enhanced by decreasing compression ratio
  • (C)  unaflected by compression ratio
  • (D)  first enhanced by increasig compression ratio upto a limit beyond which it will be suppressed
  • (E)  dependent on other factors
Pick up the wrong statement about supercharging __________________?
  • (A)  supercharging reduces knocking in diesel engines
  • (B)  there can be limited supercharging in petrol engines because of detonation
  • (C)  supercharging at high altitudes is essential
  • (D)  supercharging results in fuel economy
  • (E)  supercharging is essential in aircraft engines
Pick up the correct statement from the following?
  • (A)  programmer evaluation and review technique is event oriented
  • (B)  programmer evaluation and review technique is not event oriented
  • (C)  critical path method is event oriented
  • (D)  critical.path method is not activity oriented
  • (E)  none of the above