Q. In a La-mont boiler, there is a __________ circulation of water and steam.

View solution

Q. The diameter of internal flue tubes of a Lancashire boiler is about __________ that of its shell.

View solution

Q. Locomotive boiler produces steam at a very high rate.

View solution

Q. Which of the following is a fire tube boiler ?

View solution

Q. Which of the following statement is wrong?

View solution

Q. The ratio of the energy required to produce the artificial draught (expressed in metres head or J/kg of flue gas) to the mechanical equivalent of extra heat carried away per kg of flue gases due to natural draught, is known as

View solution

Q. The function of a piston in a steam engine is

View solution

Q. The high steam and low water safety valve is not used in

View solution

Q. In a Woolf type compound engine, the high pressure and low pressure cylinders

View solution

Q. The actual power generated in the engine cylinder is called

View solution

Q. In order to compare the capacity of boilers, the feed water temperature and working pressure are taken as

View solution

Q. A condenser maintains a low pressure (below atmospheric) so as to obtain the maximum possible energy from steam and thus to secure a high efficiency.

View solution

Q. The amount of water evaporated from and at 100° C into dry and saturated steam is called evaporative capacity of a boiler.

View solution

Q. The difference between the atmospheric pressure and the absolute pressure is known as vacuum in a condenser.

View solution

Q. In a steam condenser, the partial pressure of steam and air are 0.06 bar and 0.007 bar respectively. The condenser pressure is

View solution

Q. In a boiler, the heat is lost

View solution

Q. The crown of the fire box is made hemispherical in order to resist intense heat in the fire box.

View solution

Q. For maximum discharge through a chimney, the condition is that height of hot gas column producing the draught should be

View solution

Q. Water tube boilers are

View solution

Q. Which of the following is correct ? (where pa = Actual mean effective pressure, pm = Theoretical mean effective pressure, and K = Diagram factor)

View solution