10+ Talentegrity Consulting Services Interview Questions and Answers

A relay is an electrically operated switch that uses an electromagnet to control the flow of current in a circuit. A circuit breaker is a device that automatically interrupts the flow of current in a circuit when it detects an overload or short circuit.

• Relay is an electrically operated switch

• It uses an electromagnet to control the flow of current

• Circuit breaker automatically interrupts current flow in case of overload or short circuit

The principle of transformer is based on electromagnetic induction, where a changing magnetic field induces a voltage in a coil. Induction machines work on the principle of electromagnetic induction to convert electrical energy into mechanical energy.

• Transformer operates on the principle of mutual induction, where two or more coils are wound on a common magnetic core.

• When an alternating current flows through the primary coil, it creates a changing magnetic field, which induce...read more

Generators and alternators are both electrical devices that convert mechanical energy into electrical energy, but they differ in their construction and working principles.

• Generators produce direct current (DC) while alternators produce alternating current (AC).

• Generators use a commutator and brushes to convert mechanical energy into electrical energy, while alternators use slip rings and brushes.

• Generators are typically used in small-scale applications like portable power sup...read more

Birds do not get shocked when sitting on live wires due to the principle of equipotentiality.

• Birds do not complete the circuit as they are not grounded

• Birds have a high resistance to electricity due to their body structure

• Electricity follows the path of least resistance, which is the wire rather than the bird

Losses in a transformer include copper losses and iron losses.

• Copper losses occur due to the resistance of the transformer windings.

• Iron losses, also known as core losses, occur due to hysteresis and eddy currents in the transformer core.

• Copper losses can be minimized by using larger conductor sizes and reducing the winding resistance.

• Iron losses can be reduced by using high-quality magnetic materials and minimizing the core's magnetic flux density.

• Total losses in a transform...read more

Oil circuit breakers use oil as an arc extinguishing medium, while air circuit breakers use compressed air.

• Oil circuit breakers use oil as an arc extinguishing medium, while air circuit breakers use compressed air.

• Oil circuit breakers are typically used for high voltage applications, while air circuit breakers are more common in low to medium voltage applications.

• Oil circuit breakers require regular maintenance to ensure the quality of the oil, while air circuit breakers are ...read more

Control valves include globe, butterfly, ball, and plug valves. Transmitters include pressure, temperature, level, and flow transmitters.

• Types of control valves: globe, butterfly, ball, plug

• Types of transmitters: pressure, temperature, level, flow

• Examples: Globe valve, Pressure transmitter

Mooney viscosity is a measure of the viscosity of rubber compounds under shear.

• Mooney viscosity is commonly used in the rubber industry to assess the processability of rubber compounds.

• It is measured using a Mooney viscometer, which applies shear stress to the rubber sample and measures its resistance to flow.

• Higher Mooney viscosity values indicate higher viscosity and more resistance to flow, which can affect the processing and properties of the rubber.

• For example, a rubber ...read more

Actuators are devices that convert energy into motion. Types include electric, hydraulic, pneumatic, and piezoelectric actuators.

• Electric actuators: convert electrical energy into mechanical motion (e.g. motors)

• Hydraulic actuators: use liquid pressure to generate motion (e.g. hydraulic cylinders)

• Pneumatic actuators: use compressed air to create motion (e.g. pneumatic cylinders)

• Piezoelectric actuators: use piezoelectric materials to produce motion when voltage is applied (e.g....read more