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Wednesday, June 16, 2021

Condition for maximum power for DC motor

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Electric field E in a region is given by where E and x is in meter A cube of side 10cm is placed in a region as shown in figure calculate 1.electric flux through the cube and 2. the net charge enclosed by the cube

Welding transformer

in this video I will tell you about the welding transformer 1. welding Transformer construction and working 2. welding transformer is st...
YBus Matrix Of 100 Bus Interconnected System Is 80% Sparse.Number Of Transmission Lines In System

YBus Matrix Of 100 Bus Interconnected System Is 80% Sparse.Number Of Transmission Lines In System about this video- in this video i explain...
Four Charges Are Arranged At Corners Of Square ABCD The Force On The Charge Kept At Centre O Will Be

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A 10 μF and a 20μF capacitor are in series. The combination is supplied at 150 V from a sinusoidal voltage source. The voltage across the 20μF capacitor is then
A 100V/10V 50VA Transformer Converted To 100V/110V Auto Transformer Rating Of Auto Transformer Is
a 20 microfarad capacitor is connected across an ideal voltage source the current in the capacitor is
A charge +Q is placed on a thin conducting spherical shell of radius R use gauss's theorem to drive an expression for the electric field at a point lying (i) inside (11) and outside the shell
A Current i = (10 + 10 sint) Amper Is Passed Through Moving Iron Type Ammeter. It's Reading Will Be
A separately excited DC generator has a no-load voltage of 127 V
A solenoid of inductance 250 mH and resistance is connected to a battery. The time taken for the magnetic energy to reach (1/4th) of its maximum value is
Active Recovery Voltage And Its Expression
Active Recovery Voltage Will Be Maximum For Power Factor Of
Admittance Relay
Advantage Of Tulip Contacts In Circuit Breaker
Affect Of Armature Reaction On Active Recovery Voltage
Affect Of Current Asymmetry On Active Recovery Voltage
Affect Of Pf On Instantaneous Recovery Voltage
All day efficiency of transformer
An Ideal Voltage Regulator Has Voltage Regulation Off
Application of DC shunt generator
Arc Phenomena In Circuit Breaker
Arc Voltage In CB
Arcing Contact In Circuit Breaker
are kept at the vertices of equilateral triangle of side 10cm. the find the net electric field at the centroid of the triangle
Auto Transformer Numerical
Auto Valve Arrester
Auto Valve Lightning Arrester
Average Rate Of Rise Of Restriking Voltage
Average Value Of Rate Of Rise Of Restriking Voltage
back EMF in DC motor
braking torque Expression in energy metre
Braking torque in induction type energy metre
Butt Contact In Circuit Breaker
Butt Contacts
Calcutation Of Restriking Voltage In CB
Calibration
calibration of instrument
calibration of wattmeter by phantom loading
Calibration test of wattmeter by phantom loading
Capacitance Of 3 Phase Line With Unsymmetrical Spacing
Capacitance Of Single Phase Transmission Lines
Capacitance Of Two Wire Transmission Line
Capacitance Of Unsymmetrical Transposed Line
Capacitive Current Breaking In Circuit Breaker Interruption Of Capacitive Current
Capacitor Start Capacitor Run Motor
Cascade Operation For Speed Control Of Induction Motor
Cassie's Theory
Change Over Contact
Characteristics Of Restriking Voltage
Charging Current In Transmission Lines And Its Effect
Circuit Breaker Time
Circuit Breaker Using Tulip Contacts
Commercial Unit Of Electrical Energy
Comparison Between Emf And Mmf
Comparison Between MI And MC Instrument
Compensated Type Universal Motor
compensating coil in dynamometer type wattmeter
Compensating coil in wattmeter
condition for maximum efficiency of DC generator
Condition of maximum power for DC Motors
Conservator tank in transformer
Creeping in energy metre
Current Chopping In Circuit Breaker
Current Chopping Phenomenon In Circuit Breaker
Current Zero Method Of Arc Interruption
Cylindrical Rotor
DC Component In Fault Current
Dc Offset In Fault Current
Delayed sweep
Demand Factor
Derivation Of Restriking Voltage In Circuit Breaker
Derivation Of Voltage Charge And Current Across Charging Capacitor
Derive The Critical Value Of Resistance In Resistance Switching
Determine The Average Value Of The Given Waveform
Determine The Current In Given Network
Determine The Ohmmeter Value In The Given Network When R = 16O Ohm
Different Parts Of Cables
Diffrence Between Electromotive Force And Magnetomotive Force
Diffrence Between Form D And Form C Contacts
Diffrence Between Lightning Arrester And Surge Arrester
Diffrence Between Moving Iron And Moving Coil Instrument
Diffrence Between Wires And Cables
Direct Lightning Stroke And Indirect Lightning Stroke
Drawback Of Slepain's Theory
Drive Capacitor Charging Equation
Earth Wire Shielding Angle
Earthing Screen
edge effect in capacitor
Effect Of Capacitance On Transmission Lines
Effect Of Power Factor On Active Recovery Voltage
Effect Of Unsymmetrical Spacing Between Transmission Lines
efficiency of DC generator
efficiency of distribution transformer
Electrical Contacts
Electrical Surge
Electrical Transformer Its Parts And Functions
electrodynamometer type
Electrolyte Arrester
Electrolyte Lightning Arrester
EMF equation in DC Generator
EMF equation in DC machine
EMF equation in DC motor
Energy Balance Theory
Energy Balance Theory Of Arc Interruption
Expulsion Type Arrester
Expulsion Type Lightning Arrester
expulsion Type Lightning Arrester construction and working
Factors Affecting Active Recovery Voltage
Factors Affecting Arc Resistance Of Circuit Breaker
Factors Affecting Skin Effect
Factors On Which Arc Resistance Depend
Fault Clearing Time Of Circuit Breaker
Finger And Wedge Contact In Circuit Breaker
First Pole To Clear Factor
First Pole To Clear Factor Of Circuit Breaker
For The Circuit Shown Below Voltage V1 Will Be
For The Graph Shown In The Figure Find The Value Of The Temperature Coefficient Of Resistance
Form A And Form B Contact
Form C Contact
Form D Contacts
Form K Contacts
Fringing effect in capacitor
fringing effect of electric field
Front And Back Contact
Full Load Current For 3-Phase 440 Volts 20 HP Induction Motor Will Be Closer To
Function Of Electrical Contacts
generated EMF in DC generator
guard electrode to minimize fringing
High Resistance Method Of Arc Extinction
High Resistance Method Of Arc Interruption
High Speed Alternators Usually Have
High Voltage Transient
Horn Gap Arrester
Horn Gap Lightning Arrester
How Capacitor Opposes Change In Voltage
Hysteresis curve area represent
If a circular conductor carries a current of ‘I’ ampere having radius ‘r’ meter then the magnetizing force at the center of the coil is given by
If the angular frequency of an alternating voltage is \omega then the angular frequency of instantaneous real power absorbed in an ac circuit is
Impulse Protective Gap Lightning Arrester
Impulse Protective Gap With Electrolytic Arrester
In a balanced 3-phase circuit the line current is 12A. When the power is measured by two wattmeter method one meter reads 11kW while the other reads zero. The power factor of the load is
In The Circuit Shown Find The Current Through 4 Ohm Resistor Using Superposition Theorem
In The Figure Given Below Find Voltage V(t)
In The Figure Shown Below If We Connect a Source Of 2V With Internal Resistance Of 1ohm at AA' With With positive terminal at A then Current through R is
instrument callibiration
Instrumenttransformer
instrumenttransformerworking
Interpoles in DC machine
Isolated Induction Generator
laboratory type wattmeter
Lightning Arrester Definition
Line to Neutral Capacitance
Line To Neutral Capacitance Of Overhead Transmission Lines
Line To Neutral Capacitance Of Symmetrical Three Phase Line With Equilateral Spacing
Losses of DC generator
Low Resistance Method Of Arc Extinction
Luminous Flux
Luminous Flux Si Unit
Luminous Flux Unit
Magnetomotive Force Definition
Main Contact In Circuit Breaker
Maximum Temperature Limit For class F Insulation Is
Mechanism Of Lightning Stroke
Mho Relay
Mmf formula
Mmf produced by interpoles is proportional to
MMF Unit
Motor Used In Ceiling Fan Is
Multigap Lightning Arrester
needofinstrumenttransformer
no load current in transformer
Nodal Analysis Numerical
Nodal Analysis Problem
Non Salient Pole Type Rotor
Normally Open And Normally Closed Contact
Overhead Ground Wire
Oxide Film Arrester
Oxide Film Lightning Arrester
Partial discharge in High Voltage cables
Pellet Arrester
Pellet Lightning Arrester
Pellet Type Lightning Arrester
Percentage Slip In Case Of Synchronous Motor What Is Slip In Synchronous Motor
Phenomenon Of Arc Formation In Circuit Breaker
Position Of Brushes In Dc Machine
Potential transformer
potential transformer construction
Potier Triangle Method
Power factor measurement by two wattmeter method
Power Factor Of Industrial Load Is Generally
Power Surge
Projected Pole Type Rotor
properties Of Electrical Contacts
Protection Against Lightning In Power System
Protective Angle And Protective Zone Of Overhead Ground Wire
Purpose Of Overhead Ground Wire In Transmission Line
Ra = 0.02 Ω and Rsh = 15Ω Find the armature current when the generator terminal voltage is 120 V on load
Rate Of Rise Of Restriking Voltage
Ratio Of Line To Line Capacitance And Line To Neutral Capacitance
RC Time Constant
Recovery Rate Theory
Relation Between SI And Commercial Unit Of Electrical Energy
Resistance Switching
Resistance Switching Derivation
Resistance Switching In Circuit Breaker
Restriking Voltage In Circuit Breaker restriking Voltage In Circuit Breaker Recovery Voltage In Circuit Breaker
Reynold And Mason's Theory Of Charge Formation
Rod Gap Arrester
Rod Gap Lightning Arrester
Role Of Overhead Earth Wire
Rrrv & Amplitude Factor
Salient Pole Rotor
Schering bridge
Schrage motor
Self Excited Induction Generator
SHR Of Luminaire
Simpson's And Scarse Theory Of Charge Sepration
Skin Effect In Transmission Lines
Slepain's Theory
Slip Of Induction Generator
Space to Height In Illumination
Space To Height Ratio Of Lighting
Speed Control Of Induction Motor By Cascading
Speed regulation of DC motor
Standard Transmission Voltage In India
Star delta conversion for capacitor
Stroke A
Stroke B
Structure Of Underground Cable
Surge Arrester
Surge Arrester Diagram
Surge Arrester Location
Surge Arrester Workin
Swinburne's test of DC machine
Symmetrical And Asymmetrical Fault Current
Synchronous Motor Torque Angle
Synchronous Motor V Curve
Synchronous phase modifier
the wave Shape Of Current Flowing Through The Inductor Is then the wave Shape Of Voltage drop across the inductor is
the current drawn by Tungsten filament lamp is measured by an ammeter the ammeter reading under steady state condition will be _________ the ametre reading when the supply is switched off.
The Highest Speed Attainable By Dc Shunt Motor Is
the most common type of unsymmetrical fault in three phase system
The voltage across R L and C are 3 V 14 V and 10 V respectively as in the figure. If the voltage source is sinusoidal then the input voltage (r.m.s) is
The voltage wave v = Vm sin⁡(ωt − 15°) volt is applied across an ac circuit. If the current leads the voltage by 10° and the maximum value of current is Im
then the equation of current is
Three point Charges IPC each
Thyrite Lightning Arrester
Time Constant Of An RC Circuit
Torque Angle Of Synchronous Motor
Torque to weight ratio of indicating instrument
Total Break Time In Circuit Breaker
Transfer Contact
Transfer instrument
Transformer on no load
Transformer Parts And Functions
Transposition Of Conductors In Transmission Lines
Transposition Of Transmission Lines
Tulip Contacts
Two Coil With Self Inductance 1H And 2H Having A Mutual Inductance Of 1H Between Them Carry Current Of 2A And √2A Respectively. The Total Energy Stored In The Field In
two parallel conductors carrying current in opposite direction will exert on each other
Two Value Capacitor Motor
Two Winding Transformer Used As Auto Transformer Then Its Kva Rating Is
Types Of Faults Electrical Power System
Types of Faults In Transmission Lines
Underground Cable Construction
Universal Motor
Universal Motor Construction And Working
V Curve Of Synchronous Motor
Voltage Race Theory
Vs=5cost And The Complex Power Drawn Is Pcomplex =3/2+2j The Value Of R And L Respectively
Welding transformer
What Are The Transmission Voltage That Are Used In India
What Is Dc Offset || DC Offset ||
What Is Lightning Arrester
What Is Lightning Strok
What Is Luminous Flux
What Is Magnetomotive Force
What Is The Diffrentiation Of Triangular Wave
What Is The Integration Of Square Wave
What Is The Magnetic Susceptibility Of An Ideal Super Conductor
What Surge In Electrical Engineering
when a multiplier is added to an existing voltmeter for extending its range its electromagnetic damping
Which Material Used For Making Electric Switch
Which Motor Has Negative Speed Regulation
Which Motor Has The Poorest Speed Control
Which Motor Is Used In Ceiling Fan And Why
Why Brushes Are Placed In d-Axis
Why Capacitor Act As An Open Circuit In Steady State
Why Capacitor Opposes Change In Voltage
Why Compensating Coil Is Used In Universal Motor
Why Current Chopping Phenomenon Is Not Used In Oil Circuit Breaker
Why Cylindrical Rotor Is Used In High Speed Alternators
Why Induction Generator Has Negative Slip
Why Induction Motor Generally Preferred For Elevators
Why no load speed of DC series motor is very high
Why Power Factor Of Industrial Load Is lagging
Why Skin Effect Occurs
Why Speed Of Dc Shunt Motor Is Always Constant
Why Thermosetting Plastic Is Used For Making Switch
Why Three Phase Induction Motor Used In Lift
Wien bridge
Working And Lightning Arrester Location
YBus Matrix 100Bus Interconnected System 90% Sparse Find Number Of Non Zero Element In Y Bus Matrix
YBus Matrix Of 100 Bus Interconnected System Is 80% Sparse.Number Of Transmission Lines In System
Zero Power Factor Method
Zpf Method Or Potier Method For Voltage Regulation

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ELECTRICAL ENGINEERING

Electrical engineering concepts,ssc je previous year question solution,electrical engineering question for competitive exams,

HANDWRITTEN NOTES

Wednesday, June 16, 2021

Condition for maximum power for DC motor

No comments:

Post a Comment

Electric field E in a region is given by where E and x is in meter A cube of side 10cm is placed in a region as shown in figure calculate 1.electric flux through the cube and 2. the net charge enclosed by the cube