Latest I C Engines Question Answer 2022 : Best Tricks for preparation of SSC, Railway, Police competitive exams, entrance test to prepare online Exam.
21. The theoretically correct air fuel ratio for petrol engine is of the order of
(A) 6 : 1
(B) 9 : 1
(C) 12 : 1
(D) 15 : 1
22. A diesel engine has
(A) 1 valve
(B) 2 valve
(B) 3 valve
(D) 4 valves
23. Petrol is distilled at a temperature in range of
(A) 30 – 65C
(B) 65 – 220C
(C) 220 – 350C
(D) 350 – 450C
24. Kerosene is distilled at
(A) 30 – 65C
(B) 65 – 220C
(C) 220 – 350C
(D) 350 – 450C
25. Self – ignition temperature of petrol is of the order of
(A) 150C
(B) 240C
(C) 370C
(D) More than 500C
i.c. engine I C Engines Question Answer mcq
26. The spark plug gap is normally maintained at
(A) 0.1 to 0.2 mm
(B) 0.2 to 0.4 mm
(C) 0.45 to 0.6 mm
(D) 0.6 to 0.8 mm
27. The delay period in petrol engine is of the order of
(A) 0.001 sec
(B) 0.002 sec
(C) 0.01 sec
(D) 0.005 sec
28. Piston rings are usually made of
(A) Cast iron
(B) Aluminium
(B) Phosphor bronze
(D) Babbitt
29. Calorific value of diesel oil is of the order of
(A) 3000 kcal /kg
(B) 5000 kcal/kg
(C) 7500 kcal/kg
(D) 10000 kcal /kg
30. The compression ratio of motor cars is
(A) 5
(B) 7
(C) 10
(D) 13
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