Copper losses, Eddy current loss, and hysteresis loss are the types of power losses in inductor.
Explain the “mitigation of power theft” and “faulty meter replacement” for energy conservation techniques to reduce commercial losses.
Last Answer : Energy conservation techniques to reduce commercial losses: 1. Mitigation of Power Theft: Power theft being the most important issue which all of the service providing utilities ... agricultural sector. Prepaid meters may prove effective measures against unauthorized abstraction of energy.
Last Answer : To protect most of the electrical equipment handling low power, the types of relays used are thermocouple, electronic and bimetallic.
What are the types of power generation?
what are the three different types of Electric power?
Last Answer : Real,reactive,apparent power
What is the percentage of stray losses in DC machine?
Last Answer : Percentage of stray losses in DC machine is about 1 % .
derive an expression for the Ripple factor in a full wave rectifier using inductor filter
Describe the operation of inductor filter with help of circuit diagram and waveforms.
State the applications and specification of (i) Resistor (ii) Capacitor (iii)Inductor
Last Answer : Application of resistor: 1.Resistors are used in high frequency instrument. 2.Resistor is used in power control circuit. 3.It is used in DC power supplies. 4.Resistors are used ... DC Current 3.Electromagnetic Interference (EMI) 4.Magnetic Saturation Flux Density 5.Curie Temperature
Why inductor current lags inductor voltage ?
Last Answer : Inductor is a wire wounding structure having a core material it induces emf which is opposite to the voltage supply and proportional to rate of change of current so current lags the voltage in inductor
An inductor is connected in series with SCR to protect it from A) Excessive high voltage B) Excessive high dv/dt C) Excessive high di/dt D) Excessive large forward current
Last Answer : An inductor is connected in series with SCR to protect it from Excessive high di/dt
An inductor of Q factor 10 is connected in series with a capacitor having a Q factor of 100. The overall Q factor of the circuit is : (A) 100/11 (B) 11/100 (C) 110 (D) 1000
Last Answer : An inductor of Q factor 10 is connected in series with a capacitor having a Q factor of 100. The overall Q factor of the circuit is : 100/11
What is back EMF in inductor?
Explain design constraint of filter inductor design.
Explain the characteristics of inductor to be considered while designing it. What is the effect of over current and increase in temperature on inductor.
Explain the iterative inductor design procedure. Show the design procedure flowchart.
What is the difference between a coil and an inductor?
Last Answer : Inductor is covering with insulating material is called coil.so they differentiate between coil and inductor.
Explain the on state losses in power BJT.
Last Answer : On state losses in power BJT: Transistor have four types of losses one is turn on state losses second is turn off state losses third is turn on switching losses and fourth is turn ... ON = VCE sat x IC With increasing collector current collector to emitter saturation voltage increases.
State the losses in secondary distribution system.
Last Answer : The losses in secondary distribution system: a) Technical losses: 1. Due to poor voltage 2. Due to unbalance load 3. Due poor quality of transformer & its components 4. Due to poor quality ... of induction type of energy meter. 3. Lack of administration. 4. Energy theft 5. Unmetered supply
Explain following techniques related to energy conservation in transmission and distribution system. (i) By balancing phase currents (ii) Variable technical losses (I2R losses).
Last Answer : (i) Balancing Phase currents: Proper (healthy balanced) three phase loads always draw equal currents in all lines but single phase loads in the 3 phase 4 wire system or loads connected between two ... . 11) Minimize I2R losses. 12) Balance the load currents. 13) Regulate the system voltages.
The friction losses in Real Transformers are : (A) 0% (B) 5% (C) 25% (D) 50%
Last Answer : A
Which of the following can reduce the Eddy current losses? A) By making the core of a stack of plates electrically insulated from each other B) By making the core of solid block C) By increasing the applied voltage D) None of these
Last Answer : Which of the following can reduce the Eddy current losses? A) By making the core of a stack of plates electrically insulated from each other B) By making the core of solid block C) By increasing the applied voltage D) None of these
In DC motor iron losses are occurred in?
Last Answer : In DC motor iron losses are occurred in the armature.
Last Answer : Iron losses in a D.C. machine are independent of variations in load.
Last Answer : In case of D.C. machines, mechanical losses are primary function of speed.
Last Answer : In a D.C. generator, the iron losses mainly take place in armature rotor.
Last Answer : The total losses in a well designed D.C. generator of 10 kW will be nearly 500 W.
Reduction in core losses and increase in permeability are obtained with transformer employing?
Last Answer : Reduction in core losses and increase in permeability are obtained with transformer employing core built-up of laminations of cold rolled grain oriented steel.
Losses which occur in rotating electric machines and do not occur in transformers are?
Last Answer : Friction losses windage losses
In a given transformer for a given applied voltage, losses which remain constant irrespective of load changes are?
Last Answer : In a given transformer for a given applied voltage, losses which remain constant irrespective of load changes are hysteresis and eddy current losses.
Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is?
Last Answer : Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is approximately equal to 1.
In a synchronous motor which losses varies with load?
Last Answer : In a synchronous motor, copper losses varies with load.
Explain the electrical losses of magnetic materials used for the cores of inductors and transformer.
What are the losses in a transmission line?
In synchronous motor, does the winding losses vary with load?
Last Answer : No, in the synchronous motor the winding losses do not vary with load.
Last Answer : Iron loss, copper loss and mechanical losses these are the losses in DC machine.
List the types of filters.
Last Answer : Types of filter are as follows: 1. Shunt Capacitor filter (C filter) 2. Series Inductor filter (L filter) 3. LC filter 4. π filter (CLC filter)
Define Multivibrator. State the types of multivibrator. Which M/V can be used as a flip-flop? Draw the circuit diagram.
Last Answer : Definition:- A multivibrator is an electronic circuit that switches rapidly by means of positive feedback between two or more states. OR A multivibrator is an electronic circuit used to implement a ... Bistable Multivibrator: it can operate as a flip-flop, Circuit diagram
What are the different types of capacitors?
Last Answer : (b) is facilitated by telomerase
What are the types of biasing?
Last Answer : Biasing is classified into 2 types.The 2 types are 1) Forward biasing 2) Reverse biasing
Last Answer : MOSFETs are of two types namely 1) enhancement type MOSFET or E-MOSFET 2) depletion type MOSFET or D-MOSFET
A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by an inductor of equivalent reactance value. It will?
Last Answer : A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by an inductor of equivalent reactance value. It will not start at all.
Anyone care to join me in a quiet prayer for Jeret "Speedy" Peterson?
Last Answer : Not to sound cold, but it won’t help at this point.
Wind power plant
Types of Fire Extinguishers? Use of Fire Extinguisher ?
Last Answer : Ans. CO2 Type Fire Extinguishers, DCP type Fire Extinguishers Used for extinguishing fires of (1) Solid fires (2) Liquid fires (3) Gasfires(4)Electric
Wiring – types
Last Answer : Ans) a. Casing & Capping b. Concealed wiring c. Cleat Wiring d. Conduit Wiring – Cutting of wall.
Enlist the types of shapers.
Last Answer : Types of shapers: Based on the type of driving mechanism: a) Crank type shaper. b) Geared type shaper. Based on ram travel: a) Horizontal shaper. b) Vertical shaper. Based on the table design: a ... shaper. b) Universal shaper. Based on cutting stroke. a) Push cut type. b) Draw cut type.
Define earthing. State its types.
Last Answer : Definition of earthing: * Earthing means connecting the metal body of electrical device to the general mass of earth by a wire of negligible resistance. OR * Earthing means connecting the metal body of ... ii) Pipe type earthing iii) Rod type earthing iv) Strip earthing v)Water main earthing
State the types of protections provided by MCB.
Last Answer : The types of protections provided by MCB: 1. MCB provides short circuit protection. 2. MCB provides overload protection
State different types of holders used in wiring installation.
Last Answer : Following types of holders used in wiring installation: 1. Pendent Holder 2. Batten Holder 3. Angle holder 4. Screwed holder
Types of rolling mills and its applications
Last Answer : Types of rolling mills and its applications (1) Two-high rolling mill: used in blooming and slabbing mills (2) Three-high rolling mill: used for making plates or sections. (3) Four- ... : This mill is used for rolling stainless steel and other high strength steel sheets of thin gauge.