Why have been limits imposed on the frequency ratio for thermowells?
In 1995, an accident caused due to breaking thermowells in Monju Nuclear Plant reactor, led to very serious damages to
NFPA Standards (National Fire Protection Association Standards)
NFPA standards from National Fire Protection Association provide guidelines for incorporating fire protection safety measures in industrial systems. Classification of
Motor Control Circuit Wiring
A simple three-phase, 480 volt AC motor-control circuit is shown here, both in pictorial and schematic form. This entire assembly
Motor Protection Circuits
An essential component of any high-power motor control circuit is some device to detect a condition of excessive overload and
Power Electronics Objective Questions
Power Electronics Objective Questions 1. Questions & Answers on Diodes The P-N Junction Power Diode – Part 1 Power Diode
What is Contactor ?
To start up and shut down a three-phase AC induction motor, any three-pole switch with a suitable current rating will
Solenoid Valve’s Energized or De-energized State ?
Solenoid valves may be used in such a way that they spend most of their time de-energized, energizing only for
What is a 4-way Solenoid Valve?
When a pneumatic actuator requires air pressure applied to two different ports in order to move two different directions (such
What is a 3-way Solenoid Valve ?
3-way solenoid valves operate in a manner analogous to single-pole double-throw (SPDT) electrical switches: with two paths for flow sharing
What is a 2-way Solenoid Valve ?
2-way solenoid valves operate in a manner analogous to single-pole single-throw (SPST) electrical switches: with only one path for flow.
