Mp Biomedicals Interview Questions and Answers

Three-phase supply consists of three alternating currents, while single-phase supply has only one alternating current.

• Three-phase supply is commonly used in industrial and commercial settings.

• Single-phase supply is typically used in residential applications.

• Three-phase supply provides more power and is more efficient than single-phase supply.

• Three-phase supply requires three conductors, while single-phase supply requires only two.

• Examples of three-phase devices include motors...read more

MCBs are more reliable and safer than fuses.

• MCBs can be reset and reused, while fuses need to be replaced after every trip

• MCBs have a faster response time than fuses, which can prevent damage to equipment

• MCBs have better overload protection than fuses

• MCBs are more convenient to use as they do not require replacement every time they trip

• MCBs are safer as they do not release harmful gases or debris when they trip

Current rating is not written on electrical appliances to avoid confusion and liability.

• Current rating may vary depending on the location and voltage of the appliance.

• Manufacturers may not want to be liable for incorrect usage of the appliance.

• Current rating can be found in the user manual or on the packaging.

• Some appliances may have a range of current ratings depending on the mode of operation.

• Regulations may not require current rating to be displayed on certain types of app...read more

New fan regulators are more energy-efficient and have additional features compared to old ones.

• Old fan regulators use resistors to control the speed of the fan, while new ones use electronic circuits.

• New fan regulators have additional features such as remote control, timer, and speed settings.

• Old fan regulators are less energy-efficient and can cause the fan to make noise or vibrate.

• New fan regulators are more reliable and have a longer lifespan compared to old ones.

No, UPS and inverter are not interchangeable.

• UPS is designed to provide backup power for a short duration, while an inverter is designed to provide continuous power.

• UPS typically has a built-in battery, while an inverter requires an external battery.

• UPS is commonly used for computers and other electronic devices, while inverters are used for larger appliances like refrigerators and air conditioners.

A capacitor stores electrical energy and releases it when needed.

• Capacitors are used in electronic circuits to filter out noise and stabilize voltage.

• They can also be used to store energy in flash cameras and defibrillators.

• Capacitors come in different types and sizes, with varying capacitance and voltage ratings.

• They are made of two conductive plates separated by a dielectric material.

• The capacitance of a capacitor depends on the surface area of the plates and the distance b...read more

Relay and contactor are electrical switches that control the flow of electricity in a circuit.

• Relays are used to switch smaller currents in a circuit, while contactors are used to switch larger currents.

• Relays are often used in control circuits to turn on or off devices, while contactors are used in power circuits to control motors and other high-power loads.

• Both relay and contactor have an electromagnetic coil that, when energized, pulls in a set of contacts to make or break...read more