Steam Boilers, Engines, Nozzles & Turbines MCQ Question with Answer

Steam Boilers, Engines, Nozzles & Turbines MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

Question No : 43
Proximate analysis of fuel is determination of percentage of

Carbon, hydrogen, nitrogen, sulphur, moisture

Fixed carbon, ash, volatile matter, moisture

Higher calorific value

Lower calorific value

Question No : 44
The natural draught is produced by

Steam jet

Centrifugal fan

Chimney

Both (A) and (B)

Question No : 45
Which of the following statement is correct?

The expansion of steam in a nozzle follows Rankine cycle.

The friction in the nozzle increases the dryness fraction of steam.

The pressure of steam at throat is called critical pressure.

All of the above

Question No : 46
Which of the following statement indicates the difference between Cornish boiler and Lancashire boiler?

Cornish boiler is a water tube boiler whereas Lancashire boiler is a fire tube boiler

Cornish boiler is a fire tube boiler whereas Lancashire boiler is a water tube boiler

Cornish boiler has one flue tube whereas Lancashire boiler has two flue tubes

Cornish boiler has two flue tubes whereas Lancashire boiler has one flue tube

Question No : 47
At critical point, i.e. p = 225.65 kg/cm², the latent enthalpy of vaporisation is

Maximum

Minimum

Zero

Depends on temperature also

Question No : 48
In a Woolf type compound engine, the high pressure and low pressure cylinders

Have common piston rod

Are set at 90°

Have separate piston rod

Are set in V-arrangement

Question No : 49
Boiler parameters are expressed by

Tonnes/hr. of steam

Pressure of steam in kg/cm²

Temperature of steam in °C

All of the above