by Dipali Chaudhari
Dipali Chaudhari 
What is the difference between npn and pnp transistors? Explained- basic concepts, symbol, use, working role, function. Also described the similarities of PNP and NPN transistors.
DRDO interview questions for electrical engineer. Explained with answer. Personal and technical round for DRDO Scientist (Gazette Officer).
IIT Mandi microelectronics and VLSI interview questions asked through the GATE for ECE and EE students. How to prepare for IIT for MTech?
What is a pantograph? Types of pantograph based on construction, power source, frame, operation, spring. What are the single arm and double arm pantographs?
Newton’s second law of motion explained with an example. Also described the relation between the force, mass and acceleration by using online calculator.
IIT Indore VLSI interview questions asked through the GATE for ECE and EE students. How to prepare for IIT, Indore for MTech in VLSI design system?
What is difference between electric and diesel locomotives? Main parts of electric & diesel trains. Advantages & Disadvantages of electric engine over diesel-electric engine.
What is difference between cell and battery? Explained with Definition, Symbol, Use, Example, Size, and Similarities of cell & battery.
What is the difference between EMF and Potential Difference? Explained with Definition, Symbol, Circuit diagram, Relation, Measuring instrument, etc. Similarity of emf and potential difference.
What is the difference between EMF and MMF? Explanations- definition, representation, unit, formula, functions, online calculator, circuit diagram, etc.