Deepakkumar Yadav
Applications and Features of a Chopper Applications of choppers : D.C. motor speed control. D.C. voltage boosting. Battery operated electric cars. Battery operated appliances. Battery chargers. Features of Chopper : Chopper produces a variable dc voltage from a fixed dc input voltage. It produces a rectangular output voltage. It can operate in four quadrants of … Read more
Jone’s Chopper Jone’s chopper is a thyristorised chopper. That means an SCR is used as a chopper switch. When an SCR is operated on the DC power supply it cannot turn off naturally. So we have to include a circuit called commutation circuit to turn off the conducting SCR. Circuit diagram : The circuit diagram … Read more
Morgan Chopper Q. How Morgan Chopper does work? Q. Morgan Chopper working, waveforms & applications in power electronics Q. Why do we use a saturated reactor in a Morgan’s chopper? Circuit diagram of Morgan Chopper : Figure A shows the circuit diagram of the Morgan chopper. SCR T1 is the main thyristor. D ,C and the sable reactor (SR) … Read more
Comparison of Step Up and Step Down Choppers Q. What are Step-up & Step-down Chopper? Q. What is step up and step down chopper Q. What are the different types of chopper? Q. Difference between Step Up Chopper vs Step Down Chopper Q. Difference between Step Up Chopper and Step Down Chopper Sr. No. Parameter Step down Chopper Step … Read more
Expression for The Output Voltage of Step Up Chopper Q. Describe stop up chopper with neat circuit diagram. Draw its input and output waveforms. Q. Explain principle of step up chopper with neat be circuit diagram. Derive the expression of output voltage. Assuming that the current ripple △I is small, i.e. assuming current io, to be constant, … Read more
Energy Flow Diagram, Converting Electrical Energy to Heat to Light Take the case of a filament lamp ( which was used in early days because now a days these are replaced by LEDs ). Such diagrams are very simple, input-losses output. These diagrams are developed by a scientist “Sankey”, so these diagrams are also called as Sankey diagrams. … Read more
Energy Conservation Techniques in Motor Suggest the energy conservation techniques in following cases : (i) Motor is running with 70% loaded condition. (ii) Motor is continuously loaded at 50%. (iii) Motor runs with 30% loaded condition but sometimes rises to 50% loading condition. (iv) Motor runs continuously under no-load condition. Sr. … Read more
Reasons (Causes) for High Technical Losses Q. State any four causes of technical losses in transmission and distribution system. Also state techniques 16 reduce it. Following are the main reasons for high technical losses : Insufficient investment on transmission and distribution network : It means that proper equipment may not be used to maintain the … Read more
Nuclear Chain Reaction In a Nuclear Power Plant Q. Explain the nuclear chain reaction in a nuclear power plant. A nuclear chain reaction involves the fission (splitting) of large radioactive atoms like uranium or plutonium into smaller atoms-the splitting of uranium or plutonium starts with the uranium or plutonium and a single neutron. When one … Read more
Types of Solar Collectors Q. Classify solar collectors and draw constructional diagram of any one collector. Types of solar collectors : (a) Stationary collectors : Flat plate collectors (FPC), Stationary compound parabolic collectors, Evacuated tubular collectors (ETC). (b) Concentrating collectors : Linear Fresnel reflector, Parabolic dish, Central receiver.