Explanation

To convert Celsius to Kelvin, use the formula:

K = °C + 273.15

So,

K = 501.25 + 273.15 = 774.40 K

Explanation

Cloud formation typically occurs in the atmosphere under constant pressure conditions, meaning it is an isobaric process

Explanation

A DC motor is an electrical machine that converts electrical energy into mechanical energy.

It uses electrical current to generate a magnetic field that interacts with the motor's magnets.

It causing the motor to rotate and produce mechanical energy.

Explanation

Ohm's Law is valid only if the temperature of the conductor remains constant.

If the temperature changes, the resistance of the conductor may change, and Ohm's Law may not hold.

Explanation

Power is the work done per unit time, measured in watts (W).

It represents the rate at which energy is transferred or work is done.

Additional Information:

• Efficiency is the ratio of output to input energy.
• Energy is the ability to do work.
• Force is a push or pull that can cause an object to change its motion.

Explanation

Gravitational force is always attractive, never repulsive.

According to Newton's law of universal gravitation, every point mass attracts every other point mass by a force acting along the line intersecting both points.

This means that gravity always pulls objects towards each other, never pushes them apart.

Explanation

Centrifugal force is a fictitious force that appears to act on an object moving in a circular path, causing it to move away from the center of the circle.

It is a result of the inertia of the object, which tends to keep it moving in a straight line.

Explanation

The best description of a Zener diode is: "It operates in reverse region."

Explanation

A battery is a device that can store:

• electrical energy in the form of chemical energy,

• and convert that energy into electricity

However, when a storage battery is being used in UPS it needs charging. 

At the time of charging the conversion of electrical energy into chemical energy is observed.

Explanation

When two surfaces slide over one another the tiny bumps push on each other.

Friction causes a force on a surface that is in the opposite direction to its motion.

Friction can be reduced by the application of lubricants

ND20-1-2023