Engineering Questions with Answers - Multiple Choice Questions

# Mechanical Operations MCQ’s – Horizontal Belt Filters

1 - Question

____ is the difference between the head race and tail race.

Explanation: The difference between the head race level and the tail race level when no water is flowing is known as Gross head, it is denote by Hg.

2 - Question

The head available at the inlet of turbine is called _____

Explanation: It is also called as effective head and is defined as the head available at the inlet of turbine, when water is flowing from head race.

3 - Question

_______ is the ratio of water to a power of turbine.
a) Overall efficiency
b) Volumetric efficiency
c) Mechanical efficiency
d) Hydraulic efficiency

Explanation: It is defines as the ratio of power given to water to the runner of a turbine to power supplied by water at inlet.

4 - Question

The ratio of power available at shaft to that of runner is ____
a) Overall efficiency
b) Volumetric efficiency
c) Mechanical efficiency
d) Hydraulic efficiency

Explanation: The ratio of power available at the shaft of the turbine to the power delivered to the runner is defined as the mechanical efficiency.

5 - Question

The ratio of volume of water at runner to that supplied is called ______
a) Overall efficiency
b) Volumetric efficiency
c) Mechanical efficiency
d) Hydraulic efficiency

Explanation: Thus the ratio of the volume of water actually striking the runner to the volume of water supplied to the turbine is defined as volumetric efficiency.

6 - Question

_______ is the ratio of volume available at shaft of turbine and at inlet.
a) Overall efficiency
b) Volumetric efficiency
c) Mechanical efficiency
d) Hydraulic efficiency

Explanation: It is defined as the ratio of power available at the shaft of the turbine to the power supplied by the water at the inlet of the turbine.

7 - Question

____ is a conduit which connects the runner exit to the tailrace.
a) Baffles
b) Draft tubes
c) Impellor
d) Propeller

Explanation: The draft tube is a conduit which connects the runner exit to the tailrace where the water is being finally discharged from the turbine.

8 - Question

______ has the shape of a frustum.
a) Cone Baffles
b) Impellor
c) Conical Draft tubes
d) Cyclone Propeller

Explanation: The draft tube has the shape of a frustum of a cone. This is generally provided for low specific speed. The cone angle is not to exceed 80.

9 - Question

Banbury mixer’s operates at a pressure of ____
a) 1 to 10 atm
b) 5 to 20 atm
c) 6 to 18 atm
d) 7 to 50 atm

Explanation: Solids are charged from above and held in the trough during the mixing which is air operated at a pressure of 1 to 10 atm.

10 - Question

_____ is rubbing action.