Al Gihaz Holding Instrument Technician Lead Interview Questions and Answers

A diode is an electronic component that allows current to flow in one direction and blocks it in the opposite direction.

• Diodes are made of semiconductor materials, such as silicon or germanium.

• They have two terminals: an anode (positive terminal) and a cathode (negative terminal).

• When a diode is forward-biased (positive voltage applied to the anode), it allows current to flow through it.

• When a diode is reverse-biased (...read more

FET (Field Effect Transistor) is a type of transistor that uses an electric field to control the flow of current.

• FETs are voltage-controlled devices, meaning they are controlled by the voltage applied to their terminals.

• There are two main types of FETs: MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) and JFET (Junction Field Effect Transistor).

• MOSFETs are widely used in various electronic devices, such as co...read more

The working of all types of motors involves the conversion of electrical energy into mechanical energy.

• Motors are devices that use electromagnetic principles to generate rotational motion.

• They consist of a stator (stationary part) and a rotor (rotating part).

• The stator contains coils of wire that create a magnetic field when an electrical current passes through them.

• The rotor, which is usually made of a permanent magne...read more

MCB, MCCB, ELCB are electrical protection devices used in electrical circuits.

• MCB stands for Miniature Circuit Breaker and is used for low voltage applications.

• MCCB stands for Molded Case Circuit Breaker and is used for high voltage applications.

• ELCB stands for Earth Leakage Circuit Breaker and is used to detect and protect against electrical leakage.

• All three devices are used to protect electrical circuits from overlo