Steag Energy Services Interview Questions and Answers

The last rating MCB can go up to 125 amps.

• The last rating MCB can typically go up to 125 amps.

• MCBs are available in various ratings such as 6A, 10A, 16A, 32A, 63A, and 125A.

• The rating of an MCB determines the maximum current it can safely handle before tripping.

• For higher current requirements, larger MCBs or other protective devices like MCCBs may be used.

CT and PT are electrical devices used in power systems to measure current and voltage respectively.

• CT stands for Current Transformer and is used to measure high currents by stepping down the current to a lower value.

• PT stands for Potential Transformer and is used to measure high voltages by stepping down the voltage to a lower value.

• CTs and PTs are commonly used in power distribution systems to provide accurate measurements for protection and control purposes.

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

• Transformers are used to increase or decrease voltage levels in electrical circuits.

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

• The primary coil is connected to the input voltage source, while the secondary coil is connected to the output load.

• Transformers are commonly used in power distribution systems, electric...read more

Current is the flow of electric charge, measured in Amperes, while voltage is the force that drives the current, measured in Volts.

• Current is the rate of flow of electric charge in a circuit.

• Voltage is the electrical potential difference that drives the current.

• Current is measured in Amperes (A) while Voltage is measured in Volts (V).

• Ohm's Law relates current, voltage, and resistance: V = I * R.

UPS stands for Uninterruptible Power Supply, a device that provides emergency power to a load when the input power source fails.

• UPS ensures continuous power supply during power outages or fluctuations

• It typically consists of a battery, inverter, and charger

• Commonly used in data centers, hospitals, and critical infrastructure

• Examples include APC, CyberPower, and Eaton UPS systems