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
Solution(By Examveda Team)
When the engine is cold, the thermostat is closed and prevents coolant from flowing into the engine and allows the engine to warm up.Once the engine has warmed, the thermostat will open and allow coolant to flow and cool the engine when it starts to get too hot.
This function is vital for optimal engine performance.
This Question Belongs to Mechanical Engineering >> Automobile Engineering
The function of anti-lock brake system (ABS) is that is
A. Reduces the stopping distance
B. Minimizes the brake fade
C. Maintains directional control during braking by preventing the wheels from locking
D. Prevents nose dives during braking and thereby postpones locking of the wheels
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
Wheel base of a vehicle is the
A. Distance between the centres of the front and rear wheels
B. Distance between the centres of the front tyres
C. Distance between the centres of the rear tyres
D. Extreme length of the vehicle
The negative plates of a lead acid battery has
A. Lead peroxide (PbO2)
B. Spongy lead (Pb)
C. Lead sulphate (PbSO4)
D. Sulphuric acid (H2SO4)
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