CAD MODELLING

The dimension of strain is?

• LT-²

• N/m²

• N

• Dimensionless

Which of these are types of normal stresses?

• Tensile and compressive stresses

• Tensile and thermal stresses

• Shear and bending

• Compressive and plane stresses

Where will be the centre of gravity of a uniform rod lies?

• At its end

• At its middle point

• At its centre of its cross sectional area

• Depends upon its material

Example for cantilever beam is

• Portico slabs

• Roof slab

• Bridges

• Railway sleepers

What is tensile strain?

• The ratio of change in length to the original length

• The ratio of original length to the change in length

• The ratio of tensile force to the change in length

• The ratio of change in length to the tensile force applied

Which of the following is true about the universe?

• It is an open system

• It is a closed system

• It is an isolated system

• It is an international system

When a body falls freely under gravity, then the work done by the gravity is

• Positive

• Negative

• Zero

• Infinity

A simple pendulum hanging freely and at rest is vertical because in that position

• Kinetic energy is zero

• Potential energy is zero

• Kinetic energy is minimum

• Potential energy is minimum

In a four stroke cycle engine, the sequence of operation is

• suction, compression, expansion and exhaust

• suction, expansion, compression and exhaus

• expansion, compression, suction and exhaust

• compression, expansion, suction and exhaust

Thermal efficiency of a two stroke cycle engine is

• equal to

• less than

• greater than

• none of the mentioned