1.9
- 101. How do electromagnetic forces affect electrical machines?
- 102. Explain the role of machine design in performance optimization.
- 103. What is the purpose of a synchronous condenser?
- 104. What is vector control in motor drives?
- 105. How does an auto-transformer starter work?
- 106. What is the principle of operation of a universal motor?
- 107. What are the differences between single-phase and three-phase induction motors?
- 108. How does a linear induction motor work?
- 109. What is permanent magnet synchronous motor (PMSM)?
- 110. What are the modern techniques used in electrical machine maintenance?
- 111. How do you analyze harmonic distortions in electrical machines?
- 112. What is the significance of surge testing?
- 113. How do you diagnose rotor and stator faults?
- 114. What are the different testing methods for electrical machines?
- 115. How do you detect insulation failure in electrical machines?
- 116. What is the role of thermography in fault diagnosis?
- 117. What is vibration analysis in electrical machines?
- 118. How do you perform preventive maintenance on electrical machines?
- 119. What are the common faults in electrical machines?
- 120. What are the advantages of electronic braking?
- 121. How does a VFD help in motor starting?
- 122. What is the role of a soft starter in electrical machines?
- 123. How do starting and braking affect machine efficiency?
- 124. What is plugging in electrical machines?
- 125. What is dynamic braking?
- 126. What is regenerative braking?
- 127. What are the different types of starters used in electrical machines?
- 128. How do you start a synchronous motor?
- 129. What are the different starting methods for DC motors?
- 130. How does vibration affect the performance of electrical machines?
- 131. What is harmonic distortion in electrical machines?
- 132. What are the methods of cooling in electrical machines?
- 133. How does temperature affect the performance of electrical machines?
- 134. Explain the effects of eddy current losses in machines.
- 135. What is the significance of core losses in electrical machines?
- 136. What are the factors affecting machine efficiency?
- 137. What is the importance of power factor in electrical machines?
- 138. How is torque calculated in different types of motors?
- 139. What is torque in an electrical machine?
- 140. Explain the control methods of brushless motors.
- 141. How is the torque produced in a brushless DC motor?
- 142. What are the advantages of brushless motors over brushed motors?
- 143. How does a brushless DC motor differ from a conventional DC motor?
- 144. What is a brushless DC motor?
- 145. What is the role of a driver circuit in a stepper motor?
- 146. How is the step angle calculated in a stepper motor?
- 147. What are the advantages and disadvantages of stepper motors?
- 148. What are the different types of stepper motors?
- 149. What is a stepper motor, and how does it work?
- 150. What are the different testing methods for an induction motor?
- 151. Explain the braking methods of an induction motor.
- 152. What is an equivalent circuit of an induction motor?
- 153. What is the role of a starter in an induction motor?
- 154. How do you control the speed of an induction motor?
- 155. What is rotor resistance and how does it affect motor performance?
- 156. What are the differences between squirrel cage and wound rotor induction motors?
- 157. Explain the concept of slip in an induction motor.
- 158. What are the types of induction motors?
- 159. What is the working principle of an induction motor?
- 160. How do you determine the efficiency of a synchronous machine?
- 161. Explain the torque-angle characteristics of a synchronous machine.
- 162. What are the different types of excitation systems?
- 163. How is excitation provided in synchronous machines?
- 164. What is the purpose of damper windings in a synchronous motor?
- 165. Explain the concept of voltage regulation in a synchronous generator.
- 166. How does a synchronous generator differ from a synchronous motor?
- 167. What is synchronous speed?
- 168. How are synchronous machines classified?
- 169. What is the working principle of a synchronous machine?
- 170. How do you test the efficiency of a DC motor?
- 171. What is the significance of the starting torque in a DC motor?
- 172. What are the losses in a DC motor?
- 173. Explain the braking methods of a DC motor.
- 174. How do you control the speed of a DC motor?
- 175. What is the speed-torque characteristic of a DC motor?
- 176. How does torque develop in a DC motor?
- 177. What is back EMF in a DC motor?
- 178. Explain the classification of DC motors.
- 179. What is the working principle of a DC motor?
- 180. How do you test the performance of a DC generator?
- 181. What is the load characteristic of a DC generator?
- 182. What are the causes of losses in DC generators?
- 183. Explain the voltage regulation of a DC generator?
- 184. How do you calculate the generated EMF in a DC generator?
- 185. What are the different types of field windings used in DC generators?
- 186. How does commutation occur in a DC generator?
- 187. What is armature reaction in a DC generator?
- 188. Explain the different types of DC generators.
- 189. What is the working principle of a DC generator?
- 190. What is the role of a rotor and stator in an electrical machine?
- 191. How do cooling systems affect the performance of electrical machines?
- 192. What is an equivalent circuit of an electrical machine, and why is it needed?
- 193. Explain the role of a commutator in a DC machine?
- 194. What is the significance of insulation in electrical machines?
- 195. What is efficiency in electrical machines, and how is it calculated?
- 196. What are the different types of losses in electrical machines?
- 197. Explain the working principle of electrical machines.
- 198. What are the main differences between motors and generators?
- 199. What is an electrical machine? Explain its types.
- 200. What is the function of insulation in electrical machines?