SAMAMA Group of Companies Interview Questions and Answers

Motor reversed position can be achieved by swapping the connections of two of the three motor leads.

• To reverse the direction of a motor, swap the connections of any two of the three motor leads.

• For example, if the motor is currently wired A-B-C, reversing the position would involve wiring A-C-B.

• Ensure to follow proper safety procedures and consult the motor's manual for specific instructions.

MIG welding uses a solid wire electrode and a shielding gas, while MAG welding uses a flux-cored wire electrode with a shielding gas.

• MIG welding stands for Metal Inert Gas welding, while MAG welding stands for Metal Active Gas welding.

• MIG welding uses a solid wire electrode that requires a separate shielding gas to protect the weld pool, while MAG welding uses a flux-cored wire electrode that produces its own shielding gas when heated.

• MIG welding is typically used for non-fer...read more

Ohm's law states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points.

• Ohm's law is represented by the formula V = IR, where V is voltage, I is current, and R is resistance.

• It helps in calculating the relationship between voltage, current, and resistance in an electrical circuit.

• It is named after the German physicist Georg Simon Ohm who first formulated it in 1827.

A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.

• Transformers consist of two coils of wire, known as the primary and secondary coils.

• The primary coil is connected to a power source, while the secondary coil is connected to the load.

• The transformer operates on the principle of electromagnetic induction, where a changing current in the primary coil induces a voltage in the secondary coil.

• Transf...read more

Types of breakers include circuit breakers, fuse boxes, and ground fault circuit interrupters.

• Circuit breakers are designed to protect electrical circuits from damage caused by overload or short circuit.

• Fuse boxes contain fuses that melt and break the circuit when there is an overload.

• Ground fault circuit interrupters (GFCIs) are designed to protect against electric shock by quickly shutting off power when a ground fault is detected.

The Golden rules are basic principles of accounting that serve as the foundation for recording financial transactions.

• Golden Rule of Personal Account: Debit the receiver, credit the giver. Example: Cash received from a customer is debited to the Cash account.

• Golden Rule of Real Account: Debit what comes in, credit what goes out. Example: Purchase of machinery is debited to Machinery account.

• Golden Rule of Nominal Account: Debit all expenses and losses, credit all incomes and ...read more