Mechanical Engineering - Automobile Engineering

41. 

The purpose of a thermostat in an engine cooling system is to

A. prevent the coolant from boiling
B. allow the engine to warm up quickly
C. indicate the coolant temperature
D. pressurise the system to raise the boiling point

Answer: Option B

Explanation:

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42. 

The basic characteristics of a brake fluid is

A. a high boiling point
B. low viscosity
C. compatibility with rubber and metal parts
D. all of these

Answer: Option D

Explanation:

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43. 

The petrol engine works on

A. Otto cycle
B. Carnot cycle
C. Diesel cycle
D. Rankine cycle

Answer: Option A

Explanation:

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44. 

The gradient resistance to a vehicle having a mass of 980 kg moving on an incline of 10° is

A. 1.6694 N
B. 16.694 N
C. 166.94 N
D. 1669.4 N

Answer: Option D

Explanation:

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45. 

The reconditioning process used to give cylinder bore surfaces a cross-hatch pattern, is known as

A. honing
B. porous plating
C. boring
D. shot peening

Answer: Option A

Explanation:

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