In a centrifugal pump, cavitation occurs when:

In an ideal Diesel cycle, increasing the cut-off ratio while keeping compression ratio constant generally:

For a column with both ends hinged, the effective length factor is:

The main purpose of an economizer in a steam power plant is to:

For a heat exchanger operating without heat loss to surroundings, the effectiveness is defined as:

A Francis turbine is classified as a:

For an ideal gas undergoing a reversible adiabatic process, the relation between pressure and volume is:

In statistical process control, a process is considered statistically out of control when:

In a thermodynamic cycle, the maximum possible efficiency between two fixed temperature reservoirs is achieved by which cycle?

In a four-stroke spark-ignition engine, ignition normally occurs:

The coefficient of performance of a refrigerator is defined as:

For a thin cylindrical pressure vessel, the hoop stress is:

The maximum principal stress theory is also known as:

In boundary-layer theory, separation of the boundary layer occurs primarily because of:

The main purpose of an expansion valve in a vapour-compression refrigeration system is to:

In a solid circular shaft subjected to pure torsion, the maximum shear stress occurs at:

In down milling, the cutter rotation at the cutting point is:

For a beam subjected to pure bending, the neutral axis passes through the:

In an ideal vapour-compression refrigeration cycle, the compression process is assumed to be:

In a counter-flow heat exchanger compared with a parallel-flow heat exchanger, the counter-flow arrangement generally provides:

The knocking tendency of a spark-ignition engine is generally reduced by:

For an ideal gas, the speed of sound is proportional to:

The polar moment of inertia of a solid circular shaft of diameter d is:

The specific speed of a centrifugal pump is primarily used for:

The function of a condenser in a steam power plant is primarily to:

The Mach number of a flow is defined as the ratio of:

The degree of reaction of a purely impulse turbine stage is:

In an ideal Otto cycle, thermal efficiency depends primarily on:

In a lathe, the taper turning attachment produces a taper by:

In a conventional SI engine, the ideal air-fuel mixture is most closely associated with:

In a simply supported beam carrying a central point load W over span L, the maximum bending moment is:

The Euler buckling formula for a column is applicable primarily to:

For a reciprocating compressor, volumetric efficiency decreases significantly with increase in:

The knocking tendency of a compression-ignition engine is reduced by increasing:

In a conventional milling machine, up milling is characterized by:

In orthogonal cutting, the shear plane is the plane along which:

The purpose of a governor in an engine is to:

The least count of a vernier instrument is generally determined by:

The primary function of a flywheel in a reciprocating engine is to:

Brake power of an engine is measured at the:

In a four-stroke engine, the camshaft rotates at:

The Merchant cutting-force relationship for orthogonal cutting indicates that the shear angle generally increases when:

In a Pelton wheel, the major conversion of energy occurs from:

For a homogeneous isotropic material obeying Hooke's law, Young's modulus E, shear modulus G and Poisson's ratio nu are related by:

The Reynolds number represents the ratio of:

The mean effective pressure of an engine is best described as:

In a welded joint, the throat thickness of an equal-leg fillet weld of leg size s is approximately:

The main purpose of a jig is to:

For fully developed laminar flow through a circular pipe, the Darcy friction factor is:

In a PERT network, the expected activity time is calculated using:

For a steady one-dimensional flow through a nozzle, if the flow is adiabatic and the change in potential energy is negligible, which quantity remains constant?

Mechanical efficiency of an engine is defined as:

In a standard EOQ model, if annual demand is doubled while ordering cost and holding cost remain unchanged, the economic order quantity becomes:

In a Rankine cycle, increasing the boiler pressure while maintaining condenser pressure generally:

For a reversed Carnot refrigerator operating between temperatures T_L and T_H, the COP is:

For the same thin cylindrical pressure vessel, the longitudinal stress is:

The distortion-energy theory of failure is commonly called:

In dimensional analysis, the Buckingham Pi theorem states that if a problem contains n variables involving m fundamental dimensions, the number of independent dimensionless groups is:

In metrology, the fundamental principle of an autocollimator is based on: