engineering

The point, through which the whole weight of the body acts, irrespective of its position, is known as

• moment of inertia 

• centre of gravity

• centre of percussion

• centre of mass

The angular velocity (in rad / s) of a body rotating at N revolutions per minute is

• π/60 

• π/180 

• 2π/60 

• 2π/180 

When you drop a stone from a building this is ______motion

• Curvilinear

• Linear

• Rotational

• Oscillatory

Which of the following is true about the force? 

• It has a curve of action (acts along a curve) 

• It has a line of action (acts along a straight line) 

• It has a point of application 

• It can be aplied in 2D or 3D spaces 

When a particle is in equilibrium, the sum of forces acting is equal to 

• external forces 

• internal forces 

• zero

• Moment

When the motion of particles in the hotter part transfers their energy through vibrations to nearby ones it is what type of heat transfer... 

• Conduction

• Convection

• Radiation

A type of heat transfer that does not rely on physical contact of substances is called...

• Conduction

• Convection

• Radiation

The higher the temperature the higher the... 

• Kinetic Energy 

• Potential Energy 

• Sound Energy 

• Chemical Energy 

As the water in a freezer turns into ice, 

• the water absorbs energy from the air in the freezer. 

• the water absorbs the coldness from the air in the freezer. 

• the freezer air absorbs heat from the water. 

• the water neither absorbs nor releases energy 

What is the only method of heat transfer that DOESN’T require a medium? 

• Conduction

• Convection

• Radiation