3.
The high steam and low water safety valve is used to blow off steam when the

4.
In a boiler, feed water supplied per hour is 205 kg while coal fired per hour is 23 kg. The net enthalpy rise per kg of water is 145 kJ. If the calorific valve of the coal is 2050 kJ/kg, then the boiler efficiency will be

9.
Pick up the wrong statement about water tube boiler in comparison to fire tube boilers

10.
In fire tube boilers

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