WHAT IS AIR COMPRESSOR
1. A compressor is a mechanical device that increases the pressure of gas or air by reducing its volume
2. Compressors are similar to pumps both increase the pressure on a fluid and both can transport the fluid through a pipe
Different types of Compressor
1. How to work Recipocating Compressor?
Recipocating Compressor use piston driven by a crank shaft.
They can be either stationary or portable, Can be single or multi staged and can be driven by electric motors or internal combustion engines
2. How work Rotary compressor ?
These compressors are not of reciprocating nature there fore does not have any pistons and crankshaft.
Instead these compressors have screws,vanes scrolls, and other devices which rotate and thus compressor air or gas
The rotary compressor can be divided into two types one has blades or vanes that rotate with the shaft.
The other type has the blade which remains stationary and as part of the compressor housing assembly
3. How work scroll compressor?
A scroll compressor has one fixed scroll which remains stationary and another moving or orbiting scroll that rotates through the use of swing link.
When this happens the pockets of air or gas between the two scroll are slowly pushed to the center of the two scrolls, Causing the reduction of the volume of air or gas.
4. How work screw compressor?
The screw compressor uses a pair of helical rotars, Where it traps and compressors the air or gas as the rotors revolve in the cylinder.
The male rotor and the female rotor are built inside the cylinder.
Centrifugal Compressor is a usually used in large capacity of Compression system.
In this compressor, the air or gas is moved in a circular motion that known as centrifugal force
An impeller which is a disk with radial blades spins rapidly inside this housing causing the gas to gain velocity
(A) centrifugal pump
Answer is (B) Reciprocating pump
2. In Centrifugal pump Bearing is fitted in?
(A) Bearing Housing
(B) Casing
(C) None of these
Answer is (A) Bearing Housing
3. Which is not a part of Centrifugal pump?
(A) Piston
(B) impeller
Answer is (A) Piston
4. In Centrifugal pump Bearing lubrication done with?
(A) oil
(B) Both
(C) Grease
Answer is (B) Both
5. Why we use pumps in Industry?
(A) for Compressor the Liquid
(B) Move Liquid one place to other place
Answer is (B) Move Liquid one place to other place
(A) High flow rate
(B) Low Flow rate
Answer is (A) High flow rate
7. Single stage Centrifugal pump Has ....Nos of impeller
(A) Two
(B) Three
(C) one
Answer is (C) one
(A) Gland
(B) Mechanical seal
(C) Both
Answer is (C) Both
(A) impeller
(B) Shaft
(C) Casing
Answer is (C) Casing
(A) single stage pump
(B) Multi stage pump
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