Which of the following is NOT a condition for equilibrium of a rigid body?
- The sum of the forces acting on the body must be equal to zero.
- The sum of the moments acting on the body must be equal to zero.
- The body must be at rest.
- The body must be moving with constant velocity. (Correct Answer)
Strength of Materials
Which of the following materials has the highest yield strength?
- Steel (Correct Answer)
- Aluminum
- Copper
- Plastic
Machine Design
Which of the following types of bearings is best suited for applications where high speeds and low loads are involved?
- Ball bearings
- Roller bearings
- Sleeve bearings
- Needle bearings (Correct Answer)
Kinematics and Dynamics of Machines
Which of the following types of mechanisms is used to convert rotary motion into linear motion?
- Cam and follower
- Crank and slider (Correct Answer)
- Geneva wheel
- Rack and pinion
Thermodynamics
Which of the following is NOT a state function?
- Internal energy
- Enthalpy
- Entropy
- Temperature (Correct Answer)
Heat Transfer
Which of the following modes of heat transfer is the most efficient?
- Conduction
- Convection
- Radiation (Correct Answer)
Fluid Mechanics
Which of the following forces acts perpendicular to the direction of flow?
- Pressure force
- Viscous force
- Buoyancy force
- Drag force (Correct Answer)
Manufacturing Processes
Which of the following manufacturing processes is best suited for producing large quantities of identical parts?
- Casting (Correct Answer)
- Forging
- Machining
- 3D printing
Industrial Engineering
Which of the following is NOT a principle of lean manufacturing?
- Eliminate waste
- Just-in-time production
- Continuous improvement
- Economy of scale (Correct Answer)
Instrumentation and Control
Which of the following types of controllers is best suited for applications where a high degree of precision is required?
- Proportional-integral-derivative (PID) controller (Correct Answer)
- On-off controller
- Fuzzy logic controller
- Neural network controller
Engineering Materials
Which of the following materials is best suited for applications where high strength and corrosion resistance are required?
- Stainless steel (Correct Answer)
- Aluminum
- Titanium
- Carbon fiber