Category: I.C. Engines

A. Thermal efficiency of diesel engine i about 34%
B. Theoretically correct mixture of air am petrol is approximately 15 : 1
C. High speed compression engines operate on dual combustion cycle
D. Diesel engines are compression ignition engines
E. S.I. engines are quality-governed engines

A. Lean mixture
B. Chemically correct fuel air ratio
C. Rich mixture
D. Unpredictable

A. 92%
B. 68%
C. 52%
D. 34%
E. 25%.

A. more
B. less
C. same
D. more upto some load and then less
E. it may be less or more depending on several other factors

A. increase
B. decrease
C. remain same
D. unpredictable
E. depend on other factors

A. it is properly designed
B. best quality fuel is used
C. can not work as it is impossible
D. flywheel size is proper
E. engine cooling is stopped

A. Zero
B. 5-10%
C. Depends on load and quality of fuel
D. Considerable percent

A. 1-3-6-5-2-4
B. 1-4-2-5-6-3
C. 1-6-2-5-4-3
D. 1-5-2-6-3-4
E. 1-5-3-4-2-6

A. cast iron
B. aluminium
C. phosphor bronze
D. babbitt
E. carbon steel

A. less difficult to ignite
B. just about the same difficult to ignite
C. more difficult to ignite
D. highly ignitable
E. none of the above