# Ignition or Diesel Engine MCQ Questions & Answers

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

Question 1

The common fuels for I.C. engines are _____________

A. Petrol and diesel
B. Petrol, power kerosene, light speed diesel and high-speed diesel
C. Kerosene and diesel
D. Petrol and kerosene

Question 2

Quality of the fuel is judged by its ____________

A. Calorific value
B. Power conversion
C. Loss to cool the engine
D. Consumption

Question 3

Vapor lock is associated to the ____________

A. Cooling system of engine
B. Ignition system of engine
C. Fuel supply system of engine
D. Governor system of engine

Question 4

Volatility of fuel affects the ____________

A. Engine speed
B. Efficiency
C. Consumption rate
D. Engine power

Question 5

Octane number is associated to ____________

A. Fuel consumption
B. Ignition quality of fuel
C. Fuel supply system
D. Fuel delivery

Question 6

Detonation refers to ____________

A. Engine knocking
B. Air locking
C. Poor ignition
D. Fuel properties

Question 7

A four-stroke diesel engine operating at 800 rpm uses 0.10 kg of fuel in 4 minutes while developing a torque of 70 Nm. Calculate brake specific fuel consumption

A. 0.262 kg/kwh
B. 0.256 kg/kwh
C. 0.242 kg/kwh
D. 0.236 kg/kwh

Question 8

The formula of API degree is _______

A. $$\frac{141.5}{specific\, gravity \,of \,oil\, at\, 60}$$ - 13.15
B. Specific gravity of oil-13.5
C. $$\frac{141.5}{specific\, gravity \,of\, oil}$$+131.5
D. $$\frac{specifc gravity of oil+41.31}{141.5}$$

Question 9

The knock characteristics of fuel is indicated by ____________

A. Cetane number
B. Octane number
C. Calorific value
D. Fuel consumption

Question 10

An IC engine consumes high speed diesel oil at the rate of 0.5 kg/h. Calculate the power of the engine.

A. 10 KW
B. 15.45 KW
C. 6.15 KW
D. 22.15 KW

Question 11

Specific gravity of LDO is ____________

A. 0.1
B. 1.325
C. 0.92
D. 1.05

Question 12

In engine cylinder, the petrol is vaporised ____________

A. Quicker than HSD
B. Quicker than water
C. Slow than HSD
D. Slow than water

Question 13

Find the weight of air for complete combustion of 10 l of petrol, assuming air contains 22.7%

A. 113.66 kg
B. 171 kg
C. 450.12 kg
D. 650 kg