Automotive Engine Auxiliary Systems Poppet Valves Online Exam Quiz
Automotive Engine Auxiliary Systems Poppet Valves GK Quiz. Question and Answers related to Automotive Engine Auxiliary Systems Poppet Valves. MCQ (Multiple Choice Questions with answers about Automotive Engine Auxiliary Systems Poppet Valves
What is the exhaust valve face angle that is generally kept?
Options
A : 25°
B : 30°
C : 45°
D : 45° or 30°
What is the inlet valve face angle that is generally kept?
Options
A : 25°
B : 30°
C : 45°
D : 45° or 30°
What is the highest temperature experienced by the exhaust valve?
Options
A : 550oC
B : 400oC
C : 900oC
D : 750oC
Which material is generally used in valve springs?
Options
A : Carbon steel
B : Chromium-vanadium steel
C : Nickel-chromium steel
D : Both carbon steel or chromium-vanadium steel
To avoid corrosion, the valve is given a coating with what material?
Options
A : Copper
B : Chromium
C : Zinc
D : Aluminum
What is present inside the hollow stem of the valve?
Options
A : Ethyl-glycol
B : Magnesium
C : Sodium
D : Mercury
Generally which valve is larger?
Options
A : Exhaust valve
B : Inlet valve
C : Exhaust port
D : Oil port
The least coefficient of thermal expansion to avoid excessive thermal stress is experienced by which part of the valve?
Options
A : Head
B : Face
C : Stem
D : Margin
Why there is a small clearance around the stem of the valve?
Options
A : Lubrication
B : Cooling
C : Heating
D : Strengthening
Which of the mentioned below is the advantage of a poppet valve?
Options
A : Moment of inertia
B : Shape
C : Lightweight
D : Self-centering
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