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- Question
The compression ratio of a petrol engine is nearly
Options- A. 4:1
- B. 8:1
- C. 15:1
- D. 20:1
- Correct Answer
- 8:1
- 1. The mechanical efficiency (?m) of an I.C. engine is equal to (where I.P. = Indicated power, B.P. = Brake power and F.P. = Frictional power)
Options- A. I.P/B.P.
- B. B.P/I.P.
- C. B.P/F.P
- D. F.P./B.P. Discuss
- 2. The lubrication oil flow in an engine is in the order as
Options- A. oil strainer - oil pump - relief valve - oil filter - cylinder block - cylinder head - oil pan
- B. oil pump - oil strainer - relief valve - oil filter - cylinder block - cylinder head - oil pan
- C. oil strainer - oil filter - relief valve - oil pump - cylinder block - cylinder head - oil pan
- D. oil strainer - oil pump - relief valve - oil filter - cylinder head - cylinder block - oil pan Discuss
- 3. When indicated power (I.P.) and frictional power (F.P.) are known, we can calculate
Options- A. brake power
- B. compression ratio
- C. specific air consumption
- D. mean effective pressure Discuss
- 4. A basic difference between the spark ignition engine and the Diesel engine is that the
Options- A. Diesel engine compresses air alone instead of an air-fuel mixture
- B. air temperature ignites the fuel in the Diesel engine
- C. fuel is sprayed into the combustion chamber in the Diesel engine as the piston nears T.D.C. on the compression stroke
- D. all of the above Discuss
- 5. The function of a proportioning control valve (PCV) in a brake system is to
Options- A. ensure that equal pressure is supplied to the front and rear brakes throughout every braking operation
- B. reduce the brake fluid pressure when the brakes approach their lockup point
- C. cause less brake fluid pressure to act on the front brakes than on the rear brakes when the fluid pressure exceeds a predetermined level
- D. cause less brake fluid pressure to act on the rear brakes than on the front brakes when the fluid pressure exceeds a predetermined level. Discuss
- 6. The main feature of MacPherson strut suspension is that
Options- A. the vertical size of the suspension can be made more compact
- B. non-vertical external forces are supported by the suspension arms
- C. the unsprung mass in lighter
- D. the assembly is slightly more complicated in design Discuss
- 7. The most commonly used power plant in automobiles is
Options- A. gas turbine
- B. I.C. engine
- C. battery
- D. none of these Discuss
- 8. The problems caused by the wheel imbalance are
Options- A. hard steering and hard ride
- B. poor acceleration and hard steering
- C. steering wheel vibrations and uneven tyre wear
- D. poor acceleration and reduced fuel efficiency Discuss
- 9. The fuel that detonates easily, is
Options- A. n-heptane
- B. iso-octane
- C. benzene
- D. alcohol Discuss
- 10. The sequence order of events in a four-stroke engine is
Options- A. suction - exhaust - power - compression
- B. suction - power - compression - exhaust
- C. suction - compression - power - exhaust
- D. exhaust - compression - power - suction Discuss
Automobile Engineering problems
Search Results
Correct Answer: B.P/I.P.
Correct Answer: oil strainer - oil pump - relief valve - oil filter - cylinder block - cylinder head - oil pan
Correct Answer: brake power
Correct Answer: all of the above
Correct Answer: cause less brake fluid pressure to act on the rear brakes than on the front brakes when the fluid pressure exceeds a predetermined level.
Correct Answer: non-vertical external forces are supported by the suspension arms
Correct Answer: I.C. engine
Correct Answer: steering wheel vibrations and uneven tyre wear
Correct Answer: n-heptane
Correct Answer: suction - compression - power - exhaust
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