Ram-jet engine__________________?

A. Is self-operating at zero flight speed
B. Is not self-operating at zero^flight speed
C. Requires no air for its operation
D. Produces a jet consisting of plasma

The compression ratio in a gas turbine is of the roder of____________________?

A. 3.5 : 1
B. 5 : 1
C. 8 : 1
D. 12 : 1

The working fluid in ai turbine is___________________?

A. In two phases
B. In three phases
C. In a single phase
D. In the form of air and water mixture

If V, U and Vr represent the absolute velocity of fluid, velocity of blade, and relative velocity of fluid, and suffix i and o stand for entry and exit conditions, then in a rotary machine whose degree of reaction is unity______________?

A. Vi=v0b
B. Vt>v0
C. U,D. V,= u0

In jet engines the products of combustion after passing through the gas lurbine are discharged into_______________?

A. Atmosphere
B. Back to the compressor
C. Discharge nozzle
D. Vacuum

A file removes the metal during___________________?

A. Both forward and return strokes
B. Forward stroke
C. Return stroke
D. None of these

In a _____________ , both cutting and non-cutting operations are performed at one station of the press in every stroke of the ram?

A. Progressive die
B. Simple die
C. Compound die
D. Combination die

A neutral flame is obtained by supplying___________________?

A. More volume of acetylene and less volume of oxygen
B. Equal volumes of oxygen and acetylene
C. More volume of oxygen and less volume of acetylene
D. None of the above

The cold working of metals is carried out_________________?

A. Below the recrystallisation temperature
B. At the recrystallisation temperature
C. At any temperature
D. Above the recrystallisation temperature

Lancing is the operation of _________________?

A. Cutting a sheet of metal through part of its length and then bending the cut portion
B. Removal of metal to the desired shape from the edge of a plate
C. Cutting a sheet of metal in a straight line along the length
D. Bending a sheet of metal along a curved axis