C Engineer
C Engineer Interview Questions and Answers
Q1. 1.At drum level low ID will not run 2.PA will not run if ID not running 3.FD will not run if ID and PA not at running condition 4.Rotary feeder will not run if PA not running
The operation of various components in a system is dependent on the running condition of other components.
ID must be running for drum level low
PA requires ID to be running
FD needs both ID and PA to be running
Rotary feeder is dependent on PA running
Q2. What is VFD variable frequency drive
A VFD is a type of motor controller that drives an electric motor by varying the frequency and voltage supplied to the motor.
VFDs are used to control the speed and torque of AC induction motors.
They are commonly used in HVAC systems, conveyor belts, pumps, and fans.
VFDs can improve energy efficiency by adjusting motor speed to match the load requirements.
They can also provide soft start and stop functions to reduce mechanical stress on equipment.
Example: Using a VFD to contro...read more
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