Ashpra Skills Interview Questions and Answers

Transformers can be classified into several types based on their construction, usage, and voltage levels.

• Based on construction: Shell-type, Core-type, Berry-type, and Toroidal transformers

• Based on usage: Power transformers, Distribution transformers, Instrument transformers, and Auto transformers

• Based on voltage levels: Step-up transformers, Step-down transformers, and Isolation transformers

• Other types: Rectifier trans...read more

There are two types of current - AC and DC.

• AC stands for alternating current and changes direction periodically.

• DC stands for direct current and flows in one direction only.

• AC is used in household electricity, while DC is used in batteries and electronic devices.

• AC can be converted to DC using a rectifier, while DC can be converted to AC using an inverter.

Voltage is the measure of electric potential difference between two points in a circuit.

• Voltage is measured in volts (V).

• It is the force that drives electric current through a circuit.

• Voltage can be positive or negative, depending on the direction of the current flow.

• Examples of voltage sources include batteries, generators, and power supplies.

DC current is the flow of electric charge in a single direction.

• DC stands for Direct Current

• It is produced by sources such as batteries, fuel cells, and solar cells

• DC current is used in electronic devices such as computers, televisions, and radios

• It is also used in electric vehicles and trains

A simple motor is a basic electric motor that converts electrical energy into mechanical energy.

• Simple motors have a single coil of wire that rotates within a magnetic field.

• They are commonly used in household appliances such as fans and blenders.

• Simple motors are also used in toys and small machines.

• They are less efficient than more complex motors but are cheaper and easier to manufacture.

A coil is a length of wire wound into a spiral or helix shape.

• Coils are used in many electrical devices, such as transformers and motors.

• They can also be used in heating and cooling systems, such as air conditioning units.

• Coils can be made from a variety of materials, including copper, aluminum, and steel.

• The number of turns in a coil can affect its properties, such as its inductance and resistance.

• Coils can also be us...read more