MEA-Quiz-4th Round

Euler equation for water turbine is derived on the basis of

• conservation of mass

• rate of change of linear momentum

• rate of change of angular momentum

• rate of change of velocity

Heat transfer takes place according to

• Zeroth law of thermodynamics

• first law of thermodynamics

• second law of thermodynamics

• third law of thermodynamics

The ratio between then pattern shrinkage allowance of steel & cast iron is about

• 2:1

• 1:2

• 1:1

• 3:1

Process of pouring molten metal under high pressure into mould is called

• permanent mould casting

• die casting

• investment casing

• centrifugal casting

The friction experienced by a body when in motion is known as

• rolling friction

• dynamic friction

• limiting friction

• static friction

The size of a cam depends upon

• base circle

• pitch circle

• pitch curve

• prime circle

According to principle of conservation of energy, the total momentum of a system of masses in any direction remains constant unless acted upon by an external force in that direction.

• True

• False

In hit and miss governing, the fuel supply is cut-off completely during one or more number of cycles.

• Yes

• No

Screws used for power transmission should hav

• Low efficiency

• high efficiency

• very fine threads

• strong teeth

The type of file used for a wood work is

• single-cut file

• double cut file

• rasp-cut file

• any one of these