Top 550+ Solved Thermal Engineering 2 MCQ Questions Answer
Q. If heat is added to the wet steam temperature _________
a. raises immediately
b. decreases immediately
c. raises after sometime
d. none of the mentioned
Q. After steam bubbles break the water surface, they carry water droplets this is called as ________
a. entrainment
b. capillarity
c. reverse capillarity
d. none of the mentioned
Q. Entrainment happens at __________
a. liquid surface having contact with atmosphere
b. outlet of the boiler
c. inlet of the boiler
d. none of the mentioned
Q. Resistance of water dominating the steam is called as _______
a. hydraulic water hammer
b. erosion
c. contamination
d. none of the mentioned
Q. When steam is transported dryness fraction _________
a. increases
b. decreases
c. remains constant
d. none of the mentioned
Q. Coefficient of discharge is the __________ of Actual discharge to the theoretical discharge.
a. ratio
b. product
c. sum
d. none
Q. Coefficient of discharge is used to measure ___________
a. none of the mentioned
b. pressure exerted by the nozzle on the fluid
c. flow rate allowed by the nozzle
d. resistance offered by the nozzle
Q. Coefficient of discharge is the ____________
a. product of coefficient of velocity and coefficient of contraction
b. arithmetic sum of coefficient of velocity and coefficient of contraction
c. ratio of coefficient of velocity and coefficient of contraction
d. none of the mentioned
Q. Coefficient of discharge is _____________
a. directly proportional to coefficient of discharge
b. inversely proportional to square of the coefficient of discharge
c. inversely proportional to coefficient of discharge
d. directly proportional to square of coefficient of discharge
Q. For sharp edge orifice, coefficient of discharge lies between ___________
a. 0.61 – 0.64
b. 0.87 – 0.89
c. 0.50 – 0.61
d. none of the mentioned
Q. In the equation Cd=1/K(0.5) what does K mean ?
a. pressure drop inside the nozzle
b. mass flow rate
c. flow resistance
d. none of the mentioned
Q. A turbine having alternate blades and nozzles is called as _______________
a. impulse turbine
b. reaction turbine
c. impulse & reaction turbine
d. none of the mentioned
Q. Multi stage arrangement of turbines is called as __________
a. impulse turbine
b. reaction turbine
c. compounding
d. none of the mentioned
Q. Compounding __________ efficiency at low speed.
a. decrease
b. increase
c. maximizes
d. none of the mentioned