Deccan Fine Chemicals
Gurit India Interview Questions and Answers
Q1. Distillation column design principles
Distillation column design principles involve understanding the separation process, heat transfer, and fluid dynamics.
Understanding the separation process is crucial for designing an efficient distillation column.
Consider the heat transfer requirements to ensure proper temperature control within the column.
Fluid dynamics play a key role in determining the flow patterns and efficiency of the distillation process.
Q2. Critical speed of ball mill
Critical speed of ball mill is the speed at which the centrifugal forces equal gravitational forces at the mill shell's inside surface.
Critical speed is calculated by the formula: Nc = 1/(2*pi*sqrt(D/g)) where Nc is the critical speed, D is the diameter of the mill in meters, and g is the acceleration due to gravity (9.81 m/s^2).
At critical speed, the grinding media in the mill starts rotating with the mill shell and no longer falls back, but stays on the perimeter of the mil...read more
Q3. Strength of materials ( types of materials) Thermal And hydraulics ( pumps) Projects
Strength of materials, thermal, hydraulics, and projects
Strength of materials refers to the study of how materials behave under different forces and loads
Types of materials commonly studied include metals, ceramics, polymers, and composites
Thermal engineering deals with the transfer of heat and the design of systems to control temperature
Hydraulics involves the study of fluid behavior and the use of pumps to move and control fluids
Projects in this context may refer to practic...read more
Q4. Working of relays and types of relats
Relays are electrically operated switches that control high power circuits with low power signals. Types include electromechanical, solid state, and reed relays.
Relays work by using an electromagnet to mechanically switch contacts open or closed.
Types of relays include electromechanical relays, solid state relays, and reed relays.
Electromechanical relays use an electromagnet to operate mechanical contacts.
Solid state relays use semiconductor devices to switch the circuit on a...read more
Q5. What is single line Diagram
A single line diagram is a simplified diagram that shows the electrical connections and components of a power system in a single line.
It is used to represent the electrical system in a simplified manner.
It shows the connections between various components like generators, transformers, circuit breakers, etc.
It helps in understanding the overall layout of the system and how different components are interconnected.
It is commonly used in power distribution systems and industrial ...read more
Q6. How induction motor works?
Induction motor works on the principle of electromagnetic induction to produce rotational motion.
A rotating magnetic field is produced by the stator winding
This magnetic field induces current in the rotor winding
The interaction between the magnetic field and the induced current produces torque, which causes the rotor to rotate
The speed of the rotor is slightly less than the speed of the rotating magnetic field
Induction motors are widely used in various applications such as fa...read more
Q7. Different types of transformers?
Transformers are of two types - Step-up and Step-down transformers.
Step-up transformers increase voltage while decreasing current.
Step-down transformers decrease voltage while increasing current.
Other types include isolation transformers, autotransformers, and instrument transformers.
Isolation transformers are used to isolate a circuit from the power source.
Autotransformers have a single winding and are used for voltage regulation.
Instrument transformers are used to measure v...read more
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