What is the working principles of DC motor?
The working of DC motor is based on the principle that when a current carrying conductor is placed in a magnetic field, it experiences a mechanical force. The direction of the mechanical force is given by Fleming’s Left-hand Rule and its magnitude is given by F = BIL Newton.
What is DC motor on ship?
The ship electrical motors in use are: The DC motor on ship must be fed from a DC supply, and since the power generation and distribution system on ship normally is a three-phase system, this means that a DC motor must be fed from a thyristor rectifier. This gives also a speed control of the motor.
What is the principle of DC motor Class 10?
Principle : It works on the principle of motion of a current carrying conductor in a magnetic field, according to Fleming’s Left Hand Rule. It is a device which converts electrical energy into mechanical energy of rotation.
What principle do Motors follow?
The principle of an electric motor is based on the current carrying conductor which produces magnetic field around it. A current carrying conductor is placed perpendicular to the magnetic field so that it experiences a force.
Where are DC motors used in ships?
Variable speed control is necessary for cranes, winches, windlass, capstans, forced-draught fans etc. Ship’s electric propulsion with electronic speed control may use d.c. motors or a.c. induction motors for low/medium power applications.
What type of motor used in ships?
Induction motors are used in almost all machinery system of the ship such as crane motor, propulsion motor, blower motor, seawater pump motor, and even small synchronous motor.
What is working of motor?
An electric motor is used to convert electrical energy into mechanical energy. Motors convert electric energy to mechanical work. The opposite is done by generators that convert mechanical work to electrical energy.
What is motor principle?
A current-carrying conductor will experience a force when placed within a magnetic field. The principle of the electric motor is that it converts electrical energy into kinetic energy (mechanical energy) through the interaction of the two magnetic fields.
What is the motor principle physics?
The motor principle states that a current-carrying conductor that cuts across external magnetic field lines experiences a force per- pendicular to both the magnetic field and the direction of the electric current.
How do ship motors work?
Marine engines on ships are responsible for propulsion of the vessel from one port to another. The engines used onboard ships are internal combustion engines (a type), in which, the combustion of fuel takes place inside the engine cylinder and the heat is generated post the combustion process. …
Which motor is used in ship?
What are the types of DC motors needed in all ships?
There are 4 main types of DC motors:
- Permanent Magnet DC Motors. The permanent magnet motor uses a permanent magnet to create field flux.
- Series DC Motors. In a series DC motor, the field is wound with a few turns of a large wire carrying the full armature current.
- Shunt DC Motors.
- Compound DC Motors.
How does a diesel engine work on a ship?
Raising fuel cost added benefit to the diesel engines over steam engines (high fuel consumption). Modern large merchant ships use slow speed two stroke engines. Some smaller vessels may use high speed diesel engines. Ships with these engines do not generally need gearboxes. Usually such propulsion systems consist of own direct drive propeller.
How are propulsion drives controlled on a ship?
All propulsion drives can be controlled automatically by a superior ship navigation and command system or manually from any control console. All of the functions and operating states are monitored to prevent operating mistakes and overloads. REDUCED WEAR AND TEAR Reduced maintenance expense and spare parts demand compared with
What kind of engines are used in ships?
Both 2-stroke as well as 4-stroke engines are used in the marine industry. The engines used for the main propulsion or turning the propeller/s of the normal ships are usually slow speed 2-stroke engines while those used for providing auxiliary power are usually 4-stroke high speed diesel engines.
How does an emergency power system work on a ship?
In case of failure of the ship’s main power generation system, an emergency power system or a standby system is used. The emergency power supply ensures that the essential machinery systems continue to operate the ship. Batteries or an emergency generator or even both can supply emergency power on ships.