In regenerative air preheaters, the heat is transferred By direct mixing From heating an intermediate material and then heating the air from this material From a metal wall from one medium to another Heat is transferred by bleeding some gas from furnace TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following boiler is best suited to meet the fluctuating demand of steam? Cornish boiler Locomotive boiler Babcock and Wilcox boiler Lancashire boiler TRUE ANSWER : ? YOUR ANSWER : ?
A device used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit, is called Blow off cock Superheater None of these Stop valve TRUE ANSWER : ? YOUR ANSWER : ?
The fusible plug in small boilers is located Over the combustion chamber In the fire tubes In the drum Above steam dome TRUE ANSWER : ? YOUR ANSWER : ?
The equivalent evaporation is defined as The evaporation of 15.653 kg of water per hour from and at 100°C The ratio of heat actually used in producing the steam to the heat liberated in the furnace The amount of water evaporated from and at 100°C into dry and saturated steam The amount of water evaporated or steam produced in kg per kg of fuel burnt TRUE ANSWER : ? YOUR ANSWER : ?
Fusible plug for boilers is made of fusible metal containing tin, lead, and Aluminium Copper Nickel Bismuth TRUE ANSWER : ? YOUR ANSWER : ?
The high pressure and low pressure cylinders in a Woolf type compound engine are regarded as having cranks 90° to each other 180° to each other None of these 0° to each other TRUE ANSWER : ? YOUR ANSWER : ?
Throttle governing of steam engines is a method of controlling the engine output by varying Volume of intake steam All of these Pressure of intake steam Temperature of intake steam TRUE ANSWER : ? YOUR ANSWER : ?
The pressure of steam in the engine cylinder at the beginning of the stroke is ________ the boiler pressure. Equal to None of these Higher than Less than TRUE ANSWER : ? YOUR ANSWER : ?
In natural circulation type boiler, Water is converted into steam in one. Pass without any recirculation 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 Feed pump is employed to supplement natural circulation in water wall type furnace 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 TRUE ANSWER : ? YOUR ANSWER : ?