401. In the context of engines, what does power output measure?
ⓐ. Torque
ⓑ. Fuel efficiency
ⓒ. Energy consumption
ⓓ. Performance capability
402. Which factor affects power output in mechanical systems?
ⓐ. Friction
ⓑ. Temperature
ⓒ. Weight
ⓓ. Color
403. What is the relationship between power and energy transfer?
ⓐ. Power determines the rate of energy transfer
ⓑ. Power controls the direction of energy flow
ⓒ. Power decides the amount of energy stored
ⓓ. Power measures the potential energy
404. What type of power is used to describe the electrical energy consumed by a device?
ⓐ. Mechanical power
ⓑ. Electric power
ⓒ. Kinetic power
ⓓ. Potential power
405. Which physical quantity does power depend on?
ⓐ. Distance
ⓑ. Mass
ⓒ. Velocity
ⓓ. Volume
406. What is mechanical power?
ⓐ. The rate at which energy is transferred or converted
ⓑ. The ability of a machine to do work over time
ⓒ. The force exerted on an object
ⓓ. The rate at which work is done
407. How is mechanical power calculated?
ⓐ. P = F × d
ⓑ. P = E/t
ⓒ. P = W/t
ⓓ. P = F × v
408. Which of the following units is used to measure mechanical power?
ⓐ. Watt (W)
ⓑ. Joule (J)
ⓒ. Newton (N)
ⓓ. Meter per second (m/s)
409. In a mechanical system, what does an increase in power indicate?
ⓐ. Greater efficiency
ⓑ. Higher force
ⓒ. Faster work rate
ⓓ. Increased energy storage
410. Which type of machine typically operates using mechanical power?
ⓐ. Microwave oven
ⓑ. Refrigerator
ⓒ. Electric drill
ⓓ. Steam engine