Steam Boilers, Engines, Nozzles And Turbines MCQ Questions & Answers | Mechanical Engineering

A. One

B. Two

C. Three

D. Four

A. 6.25 mm

B. 62.5 mm

C. 72.5 mm

D. 92.5 mm

A. 4.75 mm

B. 5.47 mm

C. 7.45 mm

D. 47.5 mm

A. $${\text{pa}} = \frac{{{\text{pm}}}}{{\text{K}}}$$

B. $${\text{pa}} = {\text{pm}} \times {\text{K}}$$

C. $${\text{pa}} = \frac{{\text{K}}}{{{\text{pm}}}}$$

D. $${\text{pa}} = {\text{pm}} + {\text{K}}$$

A. $$\frac{{{{\text{p}}_2}}}{{{{\text{p}}_1}}} = {\left( {\frac{2}{{{\text{n}} - 1}}} \right)^{\frac{{\text{n}}}{{{\text{n}} + 1}}}}$$

B. $$\frac{{{{\text{p}}_2}}}{{{{\text{p}}_1}}} = {\left( {\frac{2}{{{\text{n}} + 1}}} \right)^{\frac{{\text{n}}}{{{\text{n}} - 1}}}}$$

C. $$\frac{{{{\text{p}}_2}}}{{{{\text{p}}_1}}} = {\left( {\frac{{{\text{n}} - 1}}{2}} \right)^{{\text{n}} + \frac{1}{{\text{n}}}}}$$

D. $$\frac{{{{\text{p}}_2}}}{{{{\text{p}}_1}}} = {\left( {\frac{{{\text{n}} + 1}}{2}} \right)^{{\text{n}} - \frac{1}{{\text{n}}}}}$$

A. To determine the generating capacity of the boiler

B. To determine the thermal efficiency of the boiler when working at a definite pressure

C. To prepare heat balance sheet for the boiler

D. All of the above

A. Feed pump

B. Injector

C. Feed check valve

D. Pressure gauge

A. To blow off steam when the pressure of steam inside the boiler exceeds the working pressure

B. To indicate the water level inside the boiler to an observer

C. To measure pressure of steam inside the steam boiler

D. None of the above

A. To guide motion of the piston rod and to prevent it from bending

B. To transfer motion from the piston to the cross-head

C. To convert heat energy of the steam into mechanical work id) to exhaust steam from the cylinder at proper moment

D. None of these

A. Essentially an isentropic process

B. Non-heat transfer process

C. Reversible process

D. Constant temperature process