Questions and Answers Section 1

Questions and Answers

Question :

1.The oil pump is driven by the
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crankshaft directly
Note:- Crankshaft converts reciprocating motion to rotational motion.
Question :

2.The vehicle ride will be comfortable if 
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unsprung mass is kept minimum
Question :

3.The main function of intake manifold is
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distributes intake air equally to the cylinders
Question :

4.A front stabilizer bar is used to
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control suspension movement and body roll
Question :

5.When indicated power (I.P.) and frictional power (F.P.) are known, we can calculate
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brake power
Note:-power available at the crankshaft.
Question :

6.The best fuels for compression ignition engines are
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Napthalenes
Note:- Naphthalene is an organic compound with formula C10H8.It is the simplest polycyclic aromatic hydrocarbon, and is a white crystalline solid with a characteristic odor that is detectable at concentrations as low as 0.08 ppm by mass.
Question :

7.The main function of a resonator is that it
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reduces the intake air noise
Note:-The oscillations in a resonator can be either electromagnetic or mechanical (including acoustic).
Question :

8.For the same maximum pressure and temperature
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Diesel cycle is more efficient than Otto cycle
Note:-Diesel cycle has higher compression ratio than that of Otto cycle


Question :

8.For the same maximum pressure and temperature
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Diesel cycle is more efficient than Otto cycle
Note:-Diesel cycle has higher compression ratio than that of Otto cycle
Question :

10.The lower cylindrical portion of the piston which improves piston cooling performance is called
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piston skirt
Note:-Piston skirt, piston rod and trunk piston are three components of the piston arrangement in marine diesel engines.