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

indicator diagram

axial force diagram

valve timing diagram

none of these

Answer is:

valve timing diagram

Automobile Engineering MCQ with Answers

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75) The condition that results in large quantities of CO emission is

insufficient air during combustion

insufficient fuel during combustion

low temperature combustion

high temperature combustion

Answer is:

insufficient air during combustion

76) The condition that results in large quantities of HC emission is

high temperature combustion

incomplete combustion

low temperature combustion

high atmospheric temperature combustion

Answer is:

incomplete combustion

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

air fuel ratio

air temperature

air flow speed

exhaust gas volume

Answer is:

air fuel ratio

78) The function of positive crank case ventilation (PCV) system is that it

mixes fuel with air

promotes combustion by creating a swirling movement in the air fuel mixture

returns blow by gases from the crank case to the intake system

feeds blow by gases to the exhaust manifold

Answer is:

returns blow by gases from the crank case to the intake system

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

valve timing diagram

Automobile Engineering MCQ with Answers

Related Automobile Engineering MCQ with Answers

75) The condition that results in large quantities of CO emission is

insufficient air during combustion

76) The condition that results in large quantities of HC emission is

incomplete combustion

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

air fuel ratio

78) The function of positive crank case ventilation (PCV) system is that it

returns blow by gases from the crank case to the intake system

Automobile Engineering MCQ with Answers