Top 550+ Solved Thermal Engineering 2 MCQ Questions Answer
Q. In fountains the type of nozzle used is
a. none of the mentioned
b. turbulent jet
c. high speed nozzle
d. laminar jet
Q. If mach number is less than one then its flow is
a. subsonic flow
b. turbulent flow
c. laminar flow
d. none of the mentioned
Q. The steam leaves the nozzle at a
a. low pressure and a high velocity
b. high pressure and a high velocity
c. high pressure and a low velocity
d. low pressure and a low velocity
Q. When mach number is greater than one the flow is
a. subsonic
b. supersonic
c. laminar
d. none of the mentioned
Q. In rocket engines the amount of expansion in Nozzle determines the
a. exit temperature
b. exit pressure
c. exit temperature & pressure
d. none of the mentioned
Q. De-Laval turbine is a
a. multi rotor impulse turbine
b. impulse reaction turbine
c. single rotor impulse turbine
d. none of the mentioned
Q. The supersaturated flow of steam through a nozzle as compared to a stable flow, the available heat drop
a. increases
b. decreases
c. is unpredictable
d. remains same
Q. The Parsons’ reaction turbine has
a. only moving blades
b. only fixed blades
c. fixed and moving blades of different shape
d. identical fixed and moving blades
Q. The ratio of the useful heat drop to the isentropic heat drop is called
a. condenser efficiency
b. nozzle efficiency
c. vacuum efficiency
d. boiler efficiency
Q. Rateau turbine is
a. pressure-velocity compounded turbine
b. simple reaction turbine
c. velocity compounded turbine
d. pressure compounded turbine
Q. When the cross-section of a nozzle increases continuously from entrance to exit, it is called a
a. convergent-divergent nozzle
b. divergent nozzle
c. convergent nozzle
d. none of the mentioned
Q. Aeroderivative engines have pressure ratios
a. greater than 30
b. lesser than 30 and greater than 20
c. greater than 50
d. none of the mentioned