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MCQs

Total Questions : 1197 | Page 4 of 120 pages
Question 31. The most effective method of controlling S.I. engine exhaust emission is by
  1.    Recirculating exhaust
  2.    Using catalytic converter
  3.    Using some additives in the fuel
  4.    None of these
 Discuss Question
Answer: Option B. -> Using catalytic converter
Question 32. The main function of an exhaust muffler is the
  1.    Optimization of exhaust efficiency
  2.    Reduction of exhaust noise
  3.    Reduction of nitrogen oxide in the exhaust gases
  4.    Reduction of the exhaust gas volume
 Discuss Question
Answer: Option B. -> Reduction of exhaust noise
Question 33. The information provided by the oxygen (O₂) sensor to the feedback control system is about the
  1.    Air-fuel ratio
  2.    Air temperature
  3.    Air flow speed
  4.    Exhaust gas volume
 Discuss Question
Answer: Option A. -> Air-fuel ratio
Question 34. The fuel pump of a programmed fuel injection (PFI) system operate for two seconds when the ignition is turned to the start position to
  1.    Enable the pump's fault diagnosis function to operate
  2.    Warm up and lubricate the pump
  3.    Supplies a large amount of fuel and thereby creates a choke effect
  4.    Pressurise the fuel system before the engine is started
 Discuss Question
Answer: Option D. -> Pressurise the fuel system before the engine is started
Question 35. The fuel pump in the programmed fuel injection (PFI) system is located
  1.    Between the fuel filler pipe and fuel tank
  2.    In the fuel tank
  3.    On the distributor mounting in the engine compartment
  4.    On the engine compartment bulkhead
 Discuss Question
Answer: Option B. -> In the fuel tank
Question 36. In a forced feed lubrication system, the device used to guard against excessive oil pressure, is known as
  1.    Release chamber
  2.    Balancer
  3.    Relief valve
  4.    Stop valve
 Discuss Question
Answer: Option C. -> Relief valve
Question 37. The function of positive crankcase ventilation (PCV) system is that it
  1.    Mixes fuel with air
  2.    Promotes combustion by creating a swirling movement in the air-fuel mixture
  3.    Returns blow by gases from the crankcase to the intake system
  4.    Feeds blow by gases to the exhaust manifold
 Discuss Question
Answer: Option C. -> Returns blow by gases from the crankcase to the intake system
Question 38. The basic purpose of a four wheel drive (4WD) system is that it
  1.    Delivers improved cornering on dry road surfaces
  2.    Eliminates the need of snow tyres, tyre chains, etc.
  3.    Ensures effective transmission of engine torque to all four wheels, even on slippery road surfaces
  4.    Ensures that effective braking can be performed, even on slippery surfaces
 Discuss Question
Answer: Option C. -> Ensures effective transmission of engine torque to all four wheels, even on slippery road surfaces
Question 39. The air resistance to a car at 20 kmph is R. The air resistance at 40 kmph will be
  1.    R
  2.    2R
  3.    4R
  4.    4R²
 Discuss Question
Answer: Option C. -> 4R
Question 40. Which part of the automobile tyre is subjected to greatest flexing action?
  1.    Bead
  2.    Side wall
  3.    Shoulder
  4.    Tread
 Discuss Question
Answer: Option B. -> Side wall

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