Measurement of Electrical Quantities: Measurement of electrical quantities which includes Measurement of Voltage Measurement of Current Frequency Measurement Phase-Angle Measurement Power-Factor Measurement Impedance Measurement VA Measurement Power Measurement VAR Measurement Energy Measurement Measurement of Voltage Figure 10.9 shows the schematic block diagram of dc voltage measurement. Firstly, the dc voltage is applied to the peak …
Digital Signal Processing Important Questions and Answers Electrical Machines 2 Important Questions and Answers Power Electronics Important Questions and Answers Communication Engineering Important Questions and Answers Transmission and Distribution Important Questions and Answers Principles of Management Important Questions and Answers Operating Systems Important Questions and Answers Biomedical Instrumentation Important Questions and Answers Special Electrical Machines …
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Electrical Machines 2 Important Questions and Answers: 1. What do you mean by single layer and double layer winding? Answer: Single Layer Winding: It has a slot with one coil side. To get maximum emf coil span should be equal to one pole pitch. Double Layer Winding: It has 2 coil sides per slot, one …
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Special Electrical Machines Important Questions and Answers: 1. What is Electronic Commutation? Answer: Power electronic switching devices used in commutator with the utilization of position sensor are known as electronic commutation. 2. What is PMBLDC machine? Answer: PMBLDC – Permanent Magnet Brushless DC Machine, DC motors with solid state switches performing the function of commutation …
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1. How Materials are classified according to their degree of magnetism? Answer: Classification of Material Based on Degree of Magnetism Ferromagnetic material. Paramagnetic material. Diamagnetic material. 2. Name any two methods to reduce armature reaction. Answer: Methods to Reduce Armature Reaction are Compensating windings are provided to neutralize the effects of armature reaction. By increasing …
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1. What is peripheral speed? Answer: The peripheral speed is a translation speed that may exist at the surface of the rotor while it is rotating. Peripheral speed Va = π Dr in m/sec. 2. What is meant by unbalanced magnetic pull? Answer: The unbalanced magnetic pull is the radial force acting on the rotor due to …
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Important Questions of Electrical Energy: 1. Why is electrical energy preferred over other forms of energy ? 2. Write a short note on the generation of electrical energy. 3. Discuss the different sources of energy available in nature. 4. Compare the chief sources of energy used for the generation of electrical energy. 5. Establish the …
Important Questions of Electrical Design of Overhead Lines: 1. What do you understand by the constants of an overhead transmission line ? 2. What is skin effect ? Why is it absent in the d.c. system ? 3. Find an expression for the flux linkages (i) due to a single current carrying conductor (ii) in …
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Electrical Drive Systems and Components: Electrical Drive Systems : Each Electrical Drive Systems is different from other Electrical Drive Systems. However, there are some common features associated with all Electrical Drive Systems. To understand them it is good enough to consider few examples. This approach has been adapted here. Normally, a Electrical Drive Systems receives …