Inductance smooths current Świtch opens and closes periodically v,(1) RA Vs 27 Armature Ia flows through diode while switch is open Figure 15.25

Q: Discuss how the Torque is developed in an Induction Motor

A: Gy

Q: Example: A 480-V, 60-Hz, A-connected, four-pole synchronous generator. This generator has a…

A:

Q: 3Electromechanics

A:

Q: A series-connected motor drives a load from a 50-V source at a speed of 1500 rpm. The load torque is…

A: Here, the torque is proportional to the speed as,

Q: three-phase induction motor

A:

Q: A 24 KW, 140 V, Duplex LAP-wound DC machine has been set to induce rated voltage at a speed of 2200…

A:

Q: A long shunt generator running at 1000 RPM supplies 20 kW at a terminal voltage of 220 V. The…

A:

Q: B/ fill in the blanks: A. The power factor of a squirrel cage induction motor is.... at light load…

A: In this question We need to fill all the blank.  All questions are related to the induction motor.…

Q: The dc series motor has a linear torque- speed characteristics. O True O False

A: The dc series motor has a inverse torque-speed characteristics.

Q: Q 5. A wave-wound armature of a 6-pole generator has 51 slots. Each slot contains 20 conducto…

A: Emf induced in a dc machine is given by                   Eb=∅ NZ60×PA       where ∅ is the flux per…

Q: A shunt-excited DC generator has Vt vs Field current data curves as shown, for a machine running at…

A: Dear student as per our guidelines we are supposed to answer only one question .kindly report the…

Q: a short shunt compound generator supplies a current of 100 A at 220 V.the resistance of the shunt…

A:

Q: The synchronous reactance of a cylindrical rotor machine is 1.0 p.u. The machine is connected to an…

A: The question is based on the power angle equation of a synchronous machine in pu (per unit). P = EVX…

Q: An 8-pole single induction motor is running at 690 rpm. What is its slip with respect to forward and…

A: Given--= A 8-pole single phase induction motor Number of poles, P=8 Motor speed, Nr=690 rpm To Find-…

Q: short-shunt connected compound DC generator delivers 219 A to a load at 250 V. Its shunt-field…

A: Voltage across shunt field winding= terminal voltage+ Drop in series field winding. Using ohms law…

Q: The induced torque in induction machines depends on Select one: Oa. The slip O b. The mechanical…

A: In this question we will write about induction torque..

Q: 6) The speed of a d.c. motor can be controlled by varying its flux per pole or resistance of…

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: Q-A 200 V, 10 A, 1000 rpm, separately excited d.c. motor has an armature resistance of 30. The motor…

A: 200 V, 10 A, 1000 rpm d.c motor- V=200 V, Ia=10 A, N1=1000 rpm, N2=500 rpm, Input dc voltage Vs=230…

Q: In the load characteristics of a separately-excited DC generator, its output voltage decreases with…

A: The separately-excited DC generator the filed winding can be excited by an external source. This…

Q: A 415V 50HZ 50hP 34 8 pole induction motor is drawing 65A at 0.80pf lagging. Slip is given as 2…

A: The relationship between Horse power ( HP ) and Watts is 1Hp = 735W                        = 0.735kW

Q: A 45-hp dc compound motor takes 75 A at supply mains. It operates at a speed of 500 rpm. The flux…

A:

Q: 03/ A/ long shunt D.C generator running at 1000 rpm supplies a load of 22 Kw at terminal voltage of…

A: The solution can be achieved as follows.

Q: E.g. • 2. A 3 phase, 460 V, 10hp, 60 Hz, four-pole induction machine delivers rated output power at…

A: Dear, as per company guidelines we can answer only 3 sub-parts at a time, kindly post other…

Q: b) For the following applications which type of DC motors do you select? Explain the reason. i)…

A: (b) According to the type of application dc motors are selected. For: (i) Electric train: DC series…

Q: A 24 KW, 140 V, Duplex Lap-Wound DC machine has been set to induce rated voltage at a constant K…

A:

Q: A 440-V 50-Hz, 50-hp, a three-phase induction motor is drawing 50 A at 0.75 PF lagging. The rotor…

A:

Q: The induced torque in induction machines depends on Select one: Oa The slip Ob. The mechanical speed…

A: The explanation is as follows.

Q: 4) A 40-kW induction motor, with a lagging power factor of 0.76 is supplied by a 120-Vrms, 60-Hz…

A:

Q: A separately excited dc generator when running at 1200 rpm supplies 200 A at 125 V to a circuit of…

A:

Q: 1.In order to have sparklesscommutation, the brushes should be placed along................. 2.D.C.…

A: 1. In order to have a sparkles commutation  , the brushes should be placed along MNA(magnetic…

Q: A long-shunt, compound generator delivers a load current of 50 A at 500 V and the resistances of…

A:

Q: A 3-phase 50 Hz I.M. has a rated torque = 16.7 N.M and maximum torque = 40.5 N.M. If its rated speed…

A: Induction machine is a singly excited machine in which rotating magnetic field is generated by input…

Q: Basics, Construction & Oper... A induction motor has double-cage rotor with equivalent impedance at…

A: Given- Induction motor with double-cage rotor- z1=1+j1Ωz2=0.2+j4Ω 5% slip To Find- The ratio T1 : T2

Motor Load, Torque, and Power Quality Requirement

An electric motor is a gadget that changes electrical energy into mechanical energy over to follow up on a mechanical burden. The weight set on the motor because of this mechanical movement is known as motor load. Appropriately matching the motor burden to the engine is vital to forestall harm to the engine or wasteful and unnecessary expensive activity. Engines perform such undertakings as moving a thing starting with one spot then onto the next, cutting it, changing its shape, etc. The motors might be evaluated as far as a few variables including power yield, voltage, current, and temperature. Harm to an engine might happen when it is worked under over the top engine load contrasted with its appraised limit.