A. removes air and also vapour from condenser
B. removes only air from condenser
C. removes only un-condensed vapour from condenser
D. removes air alongwith vapour and also the condensed water from condenser
Month: July 2018
A. increases the quantity of vapour extracted along with air
B. reduces the quantity of vapour extracted along with air
C. does not affect vapour quantity extracted but reduces pump capacity of air extraction pump
D. none of the above
A. fall in absolute pressure maintained in condenser
B. rise in absolute pressure maintained in condenser
C. no change in absolute pressure in the condenser
D. rise in temperature of condensed steam
A. steam and cooling water mix to give the condensate
B. cooling water passes through the tubes and steam surrounds them
C. steam passes through the cooling tubes and cooling water surrounds them
D. all of the above varying with situation
A. cooling water passes through tubes and steam surrounds them
B. steam passes through tubes and cooling water surrounds them
C. steam and cooling water mix
D. steam and cooling water do not mix
A. higher
B. lower
C. same as long as initial pressure and temperature is unchanged
D. none of the above
A. increases with the increase in number of stages
B. decreases with the increase in number of stages
C. remains same irrespective of number of stages
D. none of the above
A. Throttle governing
B. Nozzle control governing
C. By-pass governing
D. all of the above
A. 0.5 to 0.6
B. 0.9 to 0.95
C. 1.02 to 1.06
D. 1.2 to 1.6
A. exit pressure only
B. stage efficiency only
C. initial pressures and temperature only
D. all of the above
