Mech Quiz 2024-25

One litre of water occupies a volume of

• 100 cm3

• 250 cm3

• 500 cm3

• 1000 cm3

The kinematic viscosity is the

• Ratio of absolute viscosity to the density of the liquid

• Ratio of density of the liquid to the absolute viscosity

• Product of absolute viscosity and density of the liquid

• Product of absolute viscosity and mass of the liquid

All the commercial liquid fuels are derived from natural petroleum (or crude oil).

• True

• False

The amount of heat required to raise the temperature of the unit mass of gas through one degree at constant volume, is called

• Specific heat at constant volume

• Specific heat at constant pressure

• Kilo Joule

• None of these

Which of the following has the minimum atomic mass?

• Oxygen

• Sulphur

• Nitrogen

• Carbon

The amount of heat required to raise the temperature of unit mass of a gas through one degree at constant pressure is called specific heat at constant pressure.

• True

• False

The diesel engines are also known as __________ engines.

• Compression ignition

• spark ignition

In a four stroke cycle, the minimum temperature inside the engine cylinder occurs at the

• Beginning of suction stroke

• End of suction stroke

• Beginning of exhaust stroke

• End of exhaust stroke

Nuclear reactors are used

• To produce heat for thermoelectric power

• To produce fissionable material

• To propel ships, submarines, aircrafts

• All of these

The predominent isotope of the naturally occuring element is

• U235

• U238

• Pu233

• Pu239