Chemtron Science Laboratories Interview Questions and Answers

Power is the rate at which work is done or energy is transferred. AC current changes direction periodically, while DC current flows in one direction.

• Power is the rate at which work is done or energy is transferred

• AC current changes direction periodically

• DC current flows in one direction

Resistance is the opposition to the flow of electric current in a circuit.

• Resistance is measured in ohms (Ω).

• It is caused by the collisions of electrons with atoms in a material.

• Higher resistance leads to lower current flow in a circuit.

• Resistance can be controlled by using resistors in a circuit.

• Examples of materials with high resistance include rubber and glass.

• Examples of materials with low resistance include copper and silver.

A capacitor is an electronic component that stores and releases electrical energy.

• Capacitors consist of two conductive plates separated by an insulating material, known as a dielectric.

• When a voltage is applied across the plates, the capacitor stores energy in the electric field between the plates.

• Capacitors are commonly used in electronic circuits to filter out noise, smooth voltage fluctuations, and store energy.

• Examples of capacitors include ceramic capacitors, electrolyti...read more

Color coding is a method of organizing and identifying items based on specific colors assigned to different categories or characteristics.

• Used in various industries such as electronics, wiring, and organization systems

• Helps to quickly identify and differentiate between items or components

• Commonly used in electrical wiring to indicate the function or purpose of wires (e.g. red for power, black for ground)

• Can also be used in organization systems to categorize items based on col...read more

A diode is a semiconductor device that allows current to flow in one direction only.

• Diodes have two terminals - an anode and a cathode

• They are commonly used in rectifier circuits to convert AC to DC

• Examples of diodes include the common silicon diode and light-emitting diodes (LEDs)

Fundamental of Human Resource are essential principles and practices that guide HR professionals in managing employees effectively.

• Recruitment and selection

• Training and development

• Performance management

• Employee relations

• Compensation and benefits