# Objective Questions on Mechanical Engineering

13-A space lattice found in alpha-iron is called

(A) body centred cubic space lattice

(B) face centred cubic space lattice

(C) close packed hexagonal space lattice

(D) none of the above

14-The use of regeneration in a gas turbine cycle increases:

(A) Efficiency but has no effect on output

(B) Output but has no effect on efficiency

(C) Both efficiency and output

(D) None

15-The equation used for experimental measurement of viscosity is:

(A) Darcy equation

(B) Stokes equation

(C) Fanning equation

(D) Hagen Poiseuille equation

16-Bernoullis equation is derived starting from:

(A) Mass Balance

(B) Force Balance

(C) Momentum Balance

(D) Energy Balance

17-Orificemeter is used for measuring:

(A) Pressure

(B) Flow rate

(C) Density

(D) Viscosity

18-Froude number is directly proportional to

(A) Impeller speed

(B) Fluid viscosity

(C) Square of impeller diameter

(D) Square of impeller speed

19-In order to have maximum power from a Pelton turbine, the bucket speed must be:

(A) Equal to the jet speed

(B) Equal to half of jet speed

(C) Equal to twice the jet speed

(D) Independent of the jet speed

(A) velocity does not change

(B) pressure does not change

(C) conditions change gradually with time

(D) conditions do not change with time at any point

21-When the pressure of water increase, its volume:

(A) Increases

(B) Don’t change

(C) Decreases

(D) None of the above

22-Psi in terms of pressure stands for:

(A) Pressure Square Inch

(B) Per Square Inch

(C) Pounds Per Square Inch

(D) Perpendicular Square Inch

23-Rotameter is used to measure:

(A) Level

(B) Pressure

(C) Volume

(D) Flow

24-Dall Tube is another variation of:

(A) Pitot tube

(B) Flow nozzle

(C) Venturi Tube

(D) Annular Tube