Steam Boilers, Engines, Nozzles and Turbines
A compound steam engine in which piston rods of high pressure and low pressure cylinders are attached to two different cranks set at 90° to each other, is called

Woolf type compound engine
Receiver type compound engine
Tandem type compound engine
Both (A) and (B)

ANSWER DOWNLOAD EXAMIANS APP

Steam Boilers, Engines, Nozzles and Turbines
In a reaction turbine

The expansion of steam takes place partly in the fixed blades and partly in the moving blades
The steam is expanded from a high pressure to a condenser pressure in one or more nozzles
The steam is allowed to expand in the nozzle, where it gives a high velocity before it enters the moving blades
The pressure and temperature of steam remains constant

ANSWER DOWNLOAD EXAMIANS APP

Steam Boilers, Engines, Nozzles and Turbines
Blow off cock in a boiler is used to

Control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required
Empty the boiler when required and to discharge the mud, scale or sediments which are accumulated at the bottom of the boiler
Put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit
Increase the temperature of saturated steam without raising its pressure

ANSWER DOWNLOAD EXAMIANS APP

Steam Boilers, Engines, Nozzles and Turbines
In accelerated circulation type boiler

Water is converted into steam in one pass without any recirculation
Heating takes place at bottom and the water supplied at bottom gets converted into the mixture of steam bubbles and hot water which rise to drum
Feed pump is employed to supplement natural circulation in water wall type furnace
Water is supplied in drum and through down comers located in atmospheric condition it passes to the water wall and rises to drum in the form of mixture of water and steam

ANSWER DOWNLOAD EXAMIANS APP

Steam Boilers, Engines, Nozzles and Turbines
Which of the following statement indicates the difference between Cornish boiler and Lancashire boiler?

Cornish boiler is a fire tube boiler whereas Lancashire boiler is a water tube boiler
Cornish boiler is a water tube boiler whereas Lancashire boiler is a fire tube boiler
Cornish boiler has two flue tubes whereas Lancashire boiler has one flue tube
Cornish boiler has one flue tube whereas Lancashire boiler has two flue tubes

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines