Hindusthan Speciality Chemicals Interview Questions and Answers

Design a circuit to maintain constant elevation of a dish antenna between 19 and 20 degrees using hydraulic pressure.

• Use a pressure sensor to detect the hydraulic pressure in the ram

• Use a microcontroller to monitor the pressure and activate the pump when necessary

• Set upper and lower limits for the pressure to keep the elevation between 19 and 20 degrees

• Use relays to control the pump and the output signals

• Test the circuit thoroughly to ensure proper functioning

Digital data is more accurate and easier to manipulate than analog data.

• Digital data can be easily copied and transmitted without losing quality.

• Digital data can be easily manipulated and edited using software.

• Digital data is less susceptible to noise and interference than analog data.

• Digital data can be compressed to take up less storage space.

• Analog data can degrade over time, while digital data can be preserved indefinitely.

• Examples: MP3 files vs. cassette tapes, digital p...read more

Load flow study is necessary to ensure efficient and reliable operation of power systems.

• Helps in determining the steady-state operation of power systems

• Identifies potential problems such as voltage drops, overloads, and reactive power demand

• Assists in planning and designing of power systems

• Ensures efficient and reliable operation of power systems

• Helps in optimizing the use of power system resources

• Examples: Load flow study is used in power system planning, design, and operat...read more

An actuator is a component of a machine that is responsible for moving or controlling a mechanism or system.

• Actuators convert energy into motion, such as hydraulic actuators using fluid pressure to move a piston.

• They can be found in various applications, such as robotics, automotive systems, and industrial machinery.

• Actuators can be electric, hydraulic, pneumatic, or mechanical, depending on the application and requirements.

A transformer is a 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 a power source, while the secondary coil is connected to the load.

• Examples of transformers include power transformers used in electrical substations and voltage tran...read more