Mechanical Engineering - Automobile Engineering

31. 

The information provided by the oxygen (O2) sensor to the feedback control system is about the

A. air-fuel ratio
B. air temperature
C. air flow speed
D. exhaust gas volume

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

32. 

The diagram which shows the correct crank positions corresponding to the opening and closing of the valves, is known as

A. indicator diagram
B. axial force diagram
C. valve timing diagram
D. none of these

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

33. 

The difference between DOT 3 and DOT 4 brake fluids is

A. DOT 4 fluid has a higher boiling point than DOT 3 fluid
B. DOT 4 fluid has a lower boiling point than DOT 3 fluid
C. DOT 3 and DOT 4 fluids have the same boiling point, but DOT 4 fluid has a longer service life
D. DOT 4 fluid is more resistant to freezing than DOT 3 fluid

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

34. 

The battery is an electrochemical device, which means battery

A. makes chemicals by mechanical means
B. uses chemical action to provide electricity
C. has curved plates instead of flat plates
D. does not use an electrolyte

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

35. 

The operation of removing trapped air from the hydraulic braking system is known as

A. trapping
B. tapping
C. bleeding
D. cleaning

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.