Online Mechanical Engineering Test - Mechanical Engineering Test - Random

The triangle law of forces states that if two forces acting simultaneously on a particle, be represented in magnitude and direction by the two sides of a triangle taken in order, then their resultant may be represented in magnitude and direction by the third side of a triangle, taken in opposite order.

The force induced in the string BC due to the load W as shown in the below figure is

The given figure shows the Mohr's circle of stress for two unequal and like principal stresses (σ_x and σ_y) acting at a body across two mutually perpendicular planes. The normal stress on an oblique section making an angle θ with the minor principle plane is given by

A bolt is made to pass through a tube and both of them are tightly fitted with the help of washers and nuts. If the nut is tightened, then

When a body is subjected to direct tensile stresses (σ_x and σ_y ) in two mutually perpendicular directions, accompanied by a simple shear stress τ_xy , then in Mohr's circle method, the circle radius is taken as

Viscous force is the __________ of shear stress due to viscosity and cross-sectionar area of flow.

When a tube of smaller diameter is dipped in water, the water rises in the tube with an upward __________ surface.

It is __________ to make an engine working on a Carnot cycle.

In case of condensing steam engines, the pressure of steam in the cylinder during exhaust stroke is __________ the atmospheric pressure.

In a compound steam engine, the temperature range per cylinder is reduced, with corresponding reduction in the condensation.

The increase of cooling water temperature in petrol engine will __________ the knocking tendency.

The capacity of a domestic refrigerator is in the range of

The leakage in a refrigeration system using ammonia is detected by

The helix angle for double helical gears may be made up to

A connecting rod subjected to an axial load may buckle in the plane of motion of the connecting rod.

The average shear stress in the hollow shaft is smaller than the average shear stress in the solid shaft.

In average work, the tolerance produced by investment casting method is

In order to cut mild steel, the cutting angle of chisel should be

The hot working of metals is carried out

The oil pump is driven by the