- 1. What is the SI unit of force?
A) Pascal
B) Joule
C) Newton
D) Watt
- 2. Which law states that for every action, there is an equal and opposite reaction?
A) Law of Conservation of Energy
B) Newton's Third Law of Motion
C) Newton's First Law of Motion
D) Newton's Second Law of Motion
- 3. What type of energy is associated with the motion of objects?
A) Kinetic energy
B) Thermal energy
C) Potential energy
D) Mechanical energy
- 4. Which component of a machine changes the direction of a force?
A) Wheel and axle
B) Gear
C) Screw
D) Pulley
- 5. What term refers to the rate at which work is done?
A) Velocity
B) Energy
C) Force
D) Power
- 6. Which of the following is a unit of pressure?
A) Pascal
B) Newton
C) Joule
D) Watt
- 7. Which law states that an object will remain at rest or in uniform motion unless acted upon by an external force?
A) Newton's Third Law of Motion
B) Law of Conservation of Energy
C) Newton's First Law of Motion
D) Newton's Second Law of Motion
- 8. What is the formula for calculating mechanical advantage in a simple machine?
A) Input distance × Output force
B) Output force ÷ Input force
C) Input force × Output distance
D) Output distance ÷ Input distance
- 9. Which type of energy is stored in an object due to its position or state?
A) Potential energy
B) Thermal energy
C) Mechanical energy
D) Kinetic energy
- 10. What is the unit of work and energy equivalent to one joule per second?
A) Newton
B) Watt
C) Pascal
D) Hertz
- 11. Which force resists the relative motion of surfaces in contact with one another?
A) Friction
B) Gravity
C) Buoyancy
D) Tension
- 12. Which term refers to potential energy stored in objects at rest in a gravitational field?
A) Elastic potential energy
B) Chemical potential energy
C) Gravitational potential energy
D) Nuclear potential energy
- 13. Which of the following is a compound machine?
A) Screwdriver
B) Wrench
C) Scissors
D) Bicycle
- 14. Which law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass?
A) Law of Conservation of Energy
B) Newton's Third Law of Motion
C) Newton's First Law of Motion
D) Newton's Second Law of Motion
- 15. What simple machine can be described as an inclined plane that moves?
A) Wheel and axle
B) Pulley
C) Screw
D) Wedge
- 16. Which material is commonly used in the construction of gears?
A) Carbon fiber
B) Steel
C) Plastic
D) Aluminum
- 17. What property of a material describes its ability to deform under stress?
A) Density
B) Hardness
C) Elasticity
D) Viscosity
- 18. Which type of brake system uses hydraulic pressure to transfer force from the brake pedal to the brake pads?
A) Mechanical brake system
B) Hydraulic brake system
C) Drum brake system
D) Regenerative brake system
- 19. Which type of motor converts electrical energy into mechanical energy through the interaction of magnetic fields?
A) Steam engine
B) Hydraulic motor
C) Electric motor
D) Combustion engine
- 20. Which type of coupling is used to connect two shafts that are slightly misaligned?
A) Gear coupling
B) Rigid coupling
C) Fluid coupling
D) Flexible coupling
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