## What is the use of high resistance box?

The use of high resistance box is to minimize the current drawn from the cell so that internal resistance and emf of a cell can be measured.

## What is high resistance box and low resistance box?

The value of the high resistance box lies from 1Ω to 5000Ω or above while the value of the low resistance box is between 1 to 500Ω. In fractional resistance box, the value of resistance is in the form of a fraction. The range of fractional box lies between 0.1Ω to 50Ω. The construction of the box is simple and cheap.

What is the use of resistance?

They can be used not only to control the flow of current, but also to distribute voltage in a circuit. Electronic circuits need resistors in order to operate under appropriate conditions. Resistors are made of materials that resist the flow of electricity as it passes through them.

Why resistance box is used in EOT crane?

Resistance Boxes are used to add resistance into an electric motor circuit for modifying the performance characteristic of slipring induction motors of EOT cranes, rubber mills, steel rolling mills, cement mills, power plants, conveyors, coke oven, blowers etc. or speed control and developing starting torque with low …

### What are some real life applications of resistors?

Let’s discuss some examples of resistors in real life.

• Street Lighting.
• Laptop and Mobile Chargers.
• Temperature Control.
• Fan Speed Controller.
• Measuring Electrical Current.
• Temperature Sensor.
• In-Circuit Functioning.
• Dividing Voltage.

### What is the difference between resistance box and rheostat box?

A rheostat and resistance box both act as sources ofvariable resistance in a circuit. In case of a resistance box, the resistance is in the discrete unit of 1 ohm while a rheostat varies the resistance in a continuous fashion along its length.

What is DBR in Crane?

Dynamic braking resistors (DBRs) produce braking torque and absorb the high amounts of energy generated by stopping electric motors. They are used in variable-speed drive systems such as elevators, cranes, and trains. Some DBRs are also used in related devices with high inertial loads.

What is high resistance wire?

Resistance wire is a special category of electrical wire used to control the flow of electricity. This type of wire has high resistivity – which makes it better for short wire to convert electrical energy into heat.