The maximum pressure of air at the end of compression in diesel engines is about A. 10 Kg/cm2 B. 100 […]
The maximum pressure of air at the end of compression in diesel engines is about Read Post »
a. Increase the volumetric efficiency b. Increase the compression ratio c. Bring the fuel quickly in contact with the air
The turbulence in diesel engines ensures to Read Post »
a. Equal to atmospheric pressure b. Above atmospheric pressure c. Above or below atmospheric pressure d. Below atmospheric pressure Ans:
During suction stroke the pressure inside the cylinder is Read Post »
a. Remains the same b. Increases c. Becomes zero d. Decreases Ans: b
a. The ratio of engine h.p to laden weight of vehicle b. Max. engine torque / wt. of vehicle c.
The range of gear ratios in a vehicle depends on Read Post »
a. Isothermal process b. Hyperbolic process c. Adiabatic process d. Constant pressure process Ans: c
During compression stroke the air is compressed according to Read Post »
a. Viscous friction b. Greasy friction c. Dry friction Ans: a
The type of friction generally present in an automotive engine is Read Post »
a. Thermal efficiency will be increased b. Volumetric efficiency will be increased c. Air standard efficiency will be decreased d.
If compression ratio is increased Read Post »
a. Forged round section steel b. Cast steel triangular section c. Forged square section steel d. Forged I section steel
Connecting rods are generally of the following from Read Post »
a. Piston skirt b. Piston head c. Point of minimum diameter Ans: b
The fit of the piston to the cylinder is measured at the Read Post »
a. controls the torsional vibrations b. drives the pulley c. dampens the engine speed d. reduces the speed of the
Vibration damper ………. Read Post »
a. 1/600 sec b. 1/640 sec c. 1/540 sec d. 1/530 sec Ans: c
a. An air compressor b. A blower c. A ventilator d. A breather Ans: a
The crankcase scavenging the the crankcase or underside of the piston acts as Read Post »
