The function of positive crankcase ventilation (PCV) system is that it

A Mixes fuel with air
B Promotes combustion by creating a swirling movement in the air-fuel mixture
C Returns blow by gases from the crankcase to the intake system
D Feeds blow by gases to the exhaust manifold

Correct Answer: Returns blow by gases from the crankcase to the intake system

The function of positive crankcase ventilation (PCV) system is that it returns blow by gases from the crankcase to the intake system
Bissoy MCQ
#Mechanical Engineering #Automobile Engineering

Related Questions

The function of a proportioning control valve (PCV) in a brake system is to
A Ensure that equal pressure is supplied to the front and rear brakes throughout every braking operation
B Reduce the brake fluid pressure when the brakes approach their lockup point
C Cause less brake fluid pressure to act on the front brakes than on the rear brakes when the fluid pressure exceeds a predetermined level
D Cause less brake fluid pressure to act on the rear brakes than on the front brakes when the fluid pressure exceeds a predetermined level
In the crankcase method of scavenging, the air pressure is produced by
A Supercharger
B Centrifugal pump
C Natural aspirator
D Movement of engine piston
The process of removing the burnt gases from the engine cylinder by the fresh charge coming into the engine cylinder from the crankcase, is known as
A Cleaning
B Priming
C Scavenging
D Detonation
Crankcase explosion in I.C. engines usually occurs as
A First a mild explosion followed by a bi explosion
B First a big explosion followed by a mil explosion
C Both mild and big explosions occurs simultaneously
D Never occurs
The crankcase dilution means
A Dilution of fuel in the crankcase
B Dilution of oil by water in the crankcase
C Dilution of lubrication oil by fuel in the crankcase
D Dilution of mixture passing through crankcase in two stroke engines
Duration of inspiration is decreased and rate of ventilation is increased due to stimulation of
A Pneumotaxic center
B Apneustic center
C Vagus nerve
D Nucleus of tractus solitarius
E Ventral respiratory group
Changes that occur during different phases of pulmonary ventilation are
A Right ventricular stroke volume is more during inspiration compared to left ventricular stroke volume
B Physiological splitting of 2nd heart sound is more prominent during inspiration
C Increase in heart rate during inspiration
D Most of the tidal air enters into the upper part of the lung.
E Fall in intra abdominal pressure during inspiration
The pulmonary ventilation perfusion ratio is
A Increased by hemorrhage
B About 0.8 at heart Level
C More in base than apex on erect posture
D Decreased in exercise
E Decreased with increased physiological dead space ( ↓ in Physiological shunt )
Ventilation - perfusion ratio
A Is the ratio of pulmonary ventilation to pulmonary blood flow
B Varies in various parts of lungs as an effect of gravity
C In upright position declines in a linear fashion from base to apex
D Non-uniformity of ventilation and perfusion of lungs can cause decline in co2 content
E Uniformity of this ratio can cause decline in systemic arterial PO2
How many types of ventilation are there?
A 3
B 4
C 2
D 5

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