What best explains the type of energy present in the wheels of a moving bus?
It is chemical energy, which is a type of kinetic energy
It is chemical energy, which is a type of potential energy.
It is mechanical energy, which is a type of kinetic energy
It is mechanical energy, which is a type of potential energy

The chemical energy, which is a type of kinetic energy explains the type of energy present in the wheels of a moving bus.

Explanation:

Kinetic Energy is the energy possessed by an object by virtue of its motion.

Kinetic Energy is present in every moving object. A moving bus, train,flying airplane, walking , running etc are some examples of Kinetic Energy.

Kinetic Energy is classified into  two parts Rotational Kinetic Energy and vibrational Kinetic energy.

Kinetic energy depends on two things , the mass and the velocity of the object.

In the above example , in a moving bus,the wheels of the bus are also moving. So with motion, Kinetic energy gets formed.

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current