Turbocharger Question Answer

1. How do will know that turbine side nozzle got chocked ?
Ans. Rpm of the turbocharger will get reduced.

2. Which type of turbine is of turbocharger has ?
A. Impulse type
B. Reaction type 
Ans. A ( it has got single stage  impulse type turbine )

3. How do will reduce the vibration of turbocharger?
Ans . Use of Lacing wire .

4. What is K mark of turbocharger?
Ans. It is the distance between the compressor side shaft and the bearing cover.
It is given at the bearing cover of compressor side.( 21.7 mm generally for the smaller one)

5.How to clean the rotor side of compressor ?
Ans. With the help of soap solution .
[ Don't use any chemical and steam etc. because it is of aluminium having melting temperature of 200℃.]

6. What is the material of rotor blade of turbine side and blade of compressor side ?
Ans. Nickel Chrome Alloy (Nimonic Alloy) of turbine blade and Aluminium alloy or expensive titanium of compressor side blades.

7. What is the purpose of fixed vanes on compressor side ?
Ans . To give the direction to the air .

8. What is the purpose of nozzle ring of the turbine side?
Ans. It changes the pressure energy into kinetic energy by increasing the velocity of exhaust gas .

9. What is the purpose of volute casing or Diffuser casing of compressor side ?
Ans. It increases the pressure of compressed air.

10. What is approximate rpm of Turbocharger?
Ans. Around 15000.
 
(Source : Mock test V.K.T sir)