# 2-Stroke Engine Working MCQ Questions & Answers

2-Stroke Engine Working MCQs : This section focuses on the "2-Stroke Engine Working". These Multiple Choice Questions (MCQs) should be practiced to improve the 2-Stroke Engine Working skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.

Question 1

A fuel contains 84% carbon and 16% hydrogen by mass. The necessary air- fuel ratio for chemically correct combustion is _______

A. 10.42: 1
B. 15.30: 1
C. 20.36: 1
D. 31.08: 1

Question 2

How many kilopascals are there in 1 kg/cm2?

A. 89 kPa
B. 76 kPa
C. 98 kPa
D. 69 kPa

Question 3

The amount of heat required to raise the temperature of 1 gram of substance through 1°C is known as ________

A. Internal energy
B. Molar heat capacity
C. Specific heat
D. Heat enthalpy

Question 4

The lower part of a crankcase is commonly known as _______

A. Oil pan
B. Dry liner
C. Wet liner
D. Skirt

Question 5

What is molar heat capacity (C)?

A. C = Specific heat * Molecular weight of gas
B. C = Specific heat + Molecular weight of gas
C. C = Specific heat - Molecular weight of gas
D. C = $$\frac{Specific\, heat}{Molecular\, weight\, of\, gas}$$

Question 6

What is the compression ratio of an engine whose dimensions are 100*120 mm and length of clearance space at the top dead centre being 8 mm?

A. 16:01
B. 32:01:00
C. 01:16
D. 01:32

Question 7

What is the range of angles made between common face and seat angle of valve?

A. 50°-60°
B. 30°-45°
C. 70°-85°
D. 10°-20°

Question 8

What is the stroke-bore ratio for tractor engines?

A. 1
B. 1.45
C. 0.25
D. 1.25

Question 9

Which component of I.C. engine is also known as 'half time gear'?

A. Timing gear
B. Crankcase
C. Flywheel
D. Tappet