Electrical Machine Lab - Top Private University in Kolkata

Alternator Setup

Description: The alternator used to be called a generator, and it works in a similar way. … The output of an alternator is direct current (DC). When the alternator pulley is rotated, alternating current (AC) passes through a magnetic field and an electrical current is generated. This is then converted to DC via the rectifier.

Electrical Circuit Trainer

Description: The basic electricity trainer can be used to develop the student’s abilities and teach basic electrical circuits such as series and parallel circuits, electromagnet induction, coil behavior with AC and DC circuits, diode and transistor characteristics etc.

Cut Sectional D. C. Generator

Description: A dc generator is an electrical machine which converts mechanical energy into direct current electricity. This energy conversion is based on the principle of production of dynamically induced emf.

Cut Sectional A. C. Generator

Description: AC generator, also known as alternators, is a machine that converts mechanical energy into electrical energy. The generated electrical energy is in the form of an alternating current sinusoidal output waveform. The mechanical energy is usually supplied by steam turbines, gas turbines and combustion engines.

Cut Section Of Squirrel Cage Motor (H.P.-2)

Description: A squirrel-cage rotor is the rotating part (rotor) used in the most common form of AC induction motor. It consists of a cylinder of steel with aluminum or copper conductors embedded in its surface. An electric motor with a squirrel-cage rotor is termed a squirrel-cage motor

Cut Section Of Core Type Transformer

Description: In the “closed-core” type (core form) transformer, the primary and secondary windings are wound outside and surround the core ring. In the “shell type” (shell form) transformer, the primary and secondary windings pass inside the steel magnetic circuit (core) which forms a shell around the windings

Cut Section Of Shell Type Transformer

Description: In the “closed-core” type (core form) transformer, the primary and secondary windings are wound outside and surround the core ring. In the “shell type” (shell form) transformer, the primary and secondary windings pass inside the steel magnetic circuit (core) which forms a shell around the windings

D.C. Shunt Motor Setup

Description: A DC shunt motor (also known as a shunt wound DC motor) is a type of self-excited DC motor where the field windings are shunted to or are connected in parallel to the armature winding of the motor. Since they are connected in parallel, the armature and field windings are exposed to the same supply voltage

Rotary Converter Setup

Description: A rotary phase converter uses an induction generator motor, in that it rotates to transform single-phase utility power into three-phase electricity. … Rotary Phase Converters produce alternating-current electric power to operate 3-phase equipment such as motors, inductive and resistive loads.

Single Phase Motor Setup

Description: Singlephase induction motors are not self-starting without an auxiliary stator winding driven by an out of phase current of near 90°. Once started the auxiliary winding is optional. The auxiliary winding of a permanent split capacitor motor has a capacitor in series with it during starting and running.

Slip Torque Characteristics Setup (1-phase)

Description: The induction motor torque-speed characteristic gives information on the dependence of induced mechanical torque on mechanical speed. Sometimes this characteristic is called torque-slip characteristic, where slip is defined as speed relative to synchronous speed expressed as a fraction of synchronous speed.

Slip Torque Characteristics Setup (3-phase)

Description: Torque Slip Characteristics of Three Phase Induction Motor. The torque slip curve for an induction motor gives us the information about the variation of torque with the slip. The slip is defined as the ratio of difference of synchronous speed and actual rotor speed to the synchronous speed of the machine.

Static Type 3 Phase Sequence

Description: When three-phase supply is connected to the terminals of this indicator, these lamps stars glowing. If the brightness of lamp B is more than that of lamp A, the phase sequence of supply is then RYB. But if the brightness of lamp A is more, the supply phase sequence is then YRB.

Synchro Transmitter And Receiver Setup

Description: The rotor is a dumb bell construction and wound with a concentric coil. The system set up is made up of synchro transmitter and synchro receiver on a single rigid base provided with suitable switches and anodised angular plates. The system also contains a step down transformer for providing excitation to the rotors.

Three Phase Auto Transformer

Description: 3-Phase Auto Transformers Most transformers’ primary and secondary windings are magnetically coupled but electrically isolated — 3-Phase Auto Transformers, however, differ in that the primary and secondary share a winding so they are electrically connected, in addition to being magnetically coupled.

Assemble 3 Phase Squirrel Cage Induction Motor

Description: The three-phase, squirrel-cage induction motor normally consists of a stator, a rotor, and two end shields housing the bearings that support the rotor shaft. the rotor windings are shorted to form a squirrel cage. there are no commutator or slip rings to service (compared to the dc motor).

Non – Assemble 3 – Phase Squirrel Cage Induction Motor

Description: A squirrel-cage rotor is the rotating part of the common squirrel-cage induction motor. It consists of a cylinder of steel laminations, with aluminum or copper conductors embedded in its surface. … The interaction of the magnetic fields of currents in the stator and rotor produce a torque on the rotor.

B-H Loop

Description: A hysteresis loop shows the relationship between the induced magnetic flux density (B) and the magnetizing force (H). It is often referred to as the B-H loop. The loop is generated by measuring the magnetic flux of a ferromagnetic material while the magnetizing force is changed.