Turns Ratio

Q. define power

Q. A transformer has 1500 turns in the primary coil and 1125 turns in the secondary coil. If the voltage in the primary coil is 200 V, then the voltage in the secondary coil is

1. 100 V
2. 150V
3. 200V
4. 250V

Q.

A current of $5A$ is flowing at $220V$ in the primary coil of a transformer. If the voltage produced in the secondary coil is $2200V$ and $50\%$ of power is lost, then the current in the secondary will be

1. $2.5A$

2. $5A$

3. $0.25A$

4. $0.5A$

Q. How to calculate current drawn by loaded motor?

Q. You are provided with $48$ cells each of emf $2\text{volts}$ and internal resistance $4\text{ohms}$. What maximum current can flow in the circuit having an external resistance of $12\Omega$?

1. $1.08\text{A}$
2. $1\text{A}$
3. $0.96\text{A}$
4. $1.2\text{A}$