# Tutor profile: Nitish R.

## Questions

### Subject: Basic Math

What are whole numbers?

The numbers used for counting and ordering are known as whole numbers. For example:- 3 apples are kept on the table. India has the second largest army country in the world.

### Subject: Calculus

What is a differential equation?

A differential equation states how a rate of change (a "differential") in one variable is related to other variables. For example, the single spring simulation has two variables: time t and the amount of stretch in the spring, x. If we set x = 0 to be the position of the block when the spring is unstretched, then x represents both the position of the block and the stretch in the spring. Velocity is the time derivative of position v = x', and the differential equation describing the single spring simulation is v' = −k x

### Subject: Electrical Engineering

What is a synchronous machine?

A synchronous machine is an ac rotating machine whose speed under steady state condition is proportional to the frequency of the current in its armature.It operates at a synchronous speed and this speed is given by, Ns=120f/p where f - frequency of the machine p - number of poles in machine Ns - synchronous speed

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