The steam temperature with increase in load in case of a boiler fitted with radiation superheater Remain unaffected Increases First increases and then decreases Decreases TRUE ANSWER : ? YOUR ANSWER : ?
Lancashire boiler has __________ internal flue tubes. Four Two One Three TRUE ANSWER : ? YOUR ANSWER : ?
In impulse turbines, when friction is neglected, the relative velocity of steam at outlet tip of the blade is _________ the relative velocity of steam at inlet tip of the blade. None of these Greater than Equal to Less than TRUE ANSWER : ? YOUR ANSWER : ?
The diagram factor is the ratio of the Any one of the above Actual workdone per stroke to the theoretical workdone per stroke Area of the actual indicator diagram to the area of theoretical indicator diagram Actual mean effective pressure to the theoretical mean effective pressure TRUE ANSWER : ? YOUR ANSWER : ?
The ratio of brake power to the indicated power is known as Indicated thermal efficiency Overall efficiency Brake thermal efficiency Mechanical efficiency TRUE ANSWER : ? YOUR ANSWER : ?
Heating value of fuel used is as on fired basis. If it is reported for dry or moisture free fuel, then latter should be multiplied by the following factor to correct for as fired value (1- moisture content) 1 – moisture content 1 + moisture content (1 + moisture content) TRUE ANSWER : ? YOUR ANSWER : ?
The actual vacuum in a condenser is equal to Barometric pressure + actual pressure Gauge pressure + atmospheric pressure Barometric pressure - actual pressure Gauge pressure - atmospheric pressure TRUE ANSWER : ? YOUR ANSWER : ?
The supersaturated flow of steam through a nozzle as compared to a stable flow, the available heat drop Remains the same Decreases Is unpredictable Increases TRUE ANSWER : ? YOUR ANSWER : ?
In a steam condenser, the partial pressure of steam and air are 0.06 bar and 0.007 bar respectively. The condenser pressure is 0.067 bar 0.06 bar 0.053 bar 0.007 bar TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is not a boiler mounting? Feed check valve Blow off cock Fusible plug Economiser TRUE ANSWER : ? YOUR ANSWER : ?