Why are DC motors used in elevators?
DC motors are used in elevators because they usually have higher starting torque than AC motors. This is especially important for high-speed elevators. DC motors when series connected (the armature…
What is the function of an oil transformer?
Transformer oil: The unsung hero of power transmission
Why Neutral Cable Size is Half of Phase Cable?
The neutral wire is half the size of the phase wire because it carries only the imbalance current between phase A and phase B. The neutral wire is tied to…
What does a servo motor do?
Servo motors are rotary or linear actuators that allow precise control of angular velocity or linear position, velocity, and acceleration.
What does a step motor do?
A stepper motor is a type of brushless DC motor that divides one complete rotation into multiple equal steps.
Theoretical operating cycle of a four-stroke diesel engine.
Intake stroke The piston moves from top dead center (TDC) to bottom dead center (BDC). The intake valve opens, and the filtered air enters the cylinder. Explanation: The intake stroke…
Piloted directional control valves
Piloted directional control valves use a pilot valve to indirectly actuate the main valve piston. This means that a relatively small force is required to operate the valve. A small…
2/2 3/2-way pneumatic control valve
2/2-way valves have two ports and two switching positions (open and closed). They do not have an exhaust function in the closed position (unlike 3/2-way valves)
Directional control valves for cylinder
Directional control valves control the direction of flow of compressed air. They can be actuated manually, mechanically, pneumatically, or electrically.
What type of controller is based on relay control logic?
Relays can be used to make logical control decisions in motor control circuits. For example, a relay could be used to turn on a motor when a certain sensor is…