electricalengineeringquestionanswer

Power Electronics Interview Questions with Answers:            Here, we had collected Various Power Electronics and Drives related Interview questions, Viva Questions. We are appending the new Q & A whenever we are getting from readers. Some of the questions are asked to Experienced candidates based on their previous experience. If it is not related to your field, just ignore it. [Q] What is AC voltage controller? It is defined as the power electronics converter which converts the fixed AC voltage into a variable AC voltage without change in the frequency. [Q] What is inverter? What are the types of Inverter? A device which converts dc power into ac power at desired output voltage and frequency is called as Inverter. Inverters are broadly classified into Voltage Source Inverter (VSI) Current Source Inverter (CSI) [Q] What is chopper? It is equivalent to a dc transformer in ac circuit. The Chopper is a static switch which is used to get the variable dc o...

Special Machines (Permanent Magnet Synchronous Motor)  Interview Questions [1] What is the PMSM? In medium and small size synchronous motors, DC field can be produced by permanent magnets. Such kind of motors are called as PMSM [2] What are the advantages and disadvantages of PMSM Advantages Elimination of field copper loss Higher power density Lower rotor inertia Robust construction Disadvantages Power rating low Motor power factor can not be controlled because of field excitation cannot be controlled [3] What are the classification of PMSM Based on construction     Surface mounted PMSM     Interior mounted PMSM Based on the nature of voltage induced     Sinusoidally excited     Trapezoidally excited [4] Give some applications of PMSM Robots Machine tools [5] Define torque angle The angle between excitation emf and supply voltage. This angle is called torque angle or load or power angle . [6] What are the different classifications of synchro...

Power Electronics Technical Interview Questions asked in Ametek Aerospace                One of our friend shared his interview experience. The position is for Senior Power Electronics Engineer with 5 year experience. We believe that it will be usefull for your interview preparation... The following questins were asked in the interview... [1]   How to choose a micro controller? [2]  What is the difference between a LDO and a Linear regulator? [3]  What is the difference between I2C and SPI? [4]  What is the difference between logic analyzer and a oscilloscope? [5]  On what crises do we select components/Selection of a capacitor? [6] Opamps/ADC/DAC how do you interface them externally /which ADC/DAC you have been used  and why do you selected them/resolution ? [7]  What are usages and issues with J-Tag debugger? [8]  Any experience in Automation? [9]  Emi/Emc ...