PARALLEL OPERATION OF ALTERNATOR | SYNCHRONOUS GENERATOR When we speak about the parallel operation of alternators, the first question that arises is: what is the necessity of connecting a large number of alternators in parallel. The answer is very simple. To meet with the ever-increasing demand for electrical power, it is economical and advisable to … Read more
50 Important Multiple choice questions Of Transformer – 2020 | Objective Type Question Of TRANSFORMER Qus1. The secondary winding of which of the following transformers is always kept closed? Current transformer Voltage transformer Power transformer Step down transformer Qus2. If supply frequency of a transformer increases, the secondary output voltage of the transformer Increase Decrease Remain the … Read more
Induced EMF Equation in Synchronous Machine Emf is induced in the armature windings due to the cutting of flux by the rotation of the rotor poles. Distribution of coils in the stator slots and the use of short-pitch coils affect the magnitude and the waveshape of the induced coil. In synchronous machines, the armature winding … Read more
ssc-je-synchronous-motor-synchronous-generator-questions Ques.1. The speed of a synchronous motor can be changed by Changing the supply voltage Changing the frequency Changing the load Changing the supply Terminals Ques.2. In a synchronous motor running with the fixed excitation, when the load is increased two times, its torque angle becomes approximately Half Twice✓ Four Times No Change … Read more
Losses in DC machine A DC machine is an electromechanical energy conversion device. It can convert mechanical power into DC electrical power and is known as a DC generator. On the other hand, when it converts DC electrical power into mechanical power, it is known as a DC motor. According to the law of conservation … Read more