a 220v, 500A,600r/min,separately excited dc motor has armarture and field resistance of 0.2 and 10 ohms repectively. The load is given by expression TL=2000-120n, where n is the speed in(revs/s). Speeds above the rated value are obtained by armature voltage control and speeds below rated value are calculated by field control.

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

A: Gy

Q: A 10 kW, 250 V Shunt motor has an armature resistance of 0.5 ohm and a field resistance of 200 ohm.…

A: To calculate a)full load speed, b) torque developed at full load speed 1158 rpm

Q: A shunt motor is rotating at 1500 rpm and is powered by a 120V voltage source. The current line…

A: In this question we need to find the following a) the armature current, b) the back emf (E), c) the…

Q: An 3-phase induction motor(IM) has full load slip = 0.5%. If the rotor circuit resistance is…

A:

Q: (b) A 2 pole 220 v, 100A, and 850 rpm separately excited DC motor has an armature resistance of 0.15…

A: Given: A 2 pole 220 V, 100A, and 850 rpm separately excited DC motor has an armature resistance of…

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: Draw the torque speed characteristic of separately excited dc motor showing the effect of changing…

A: steps To find the torque-speed characteristic of separately excited dc motor with the effect of…

Q: For a 18600W 2400rpm DC motor, the following values are given: Ra=0.089 Q (value at room temperature…

A: Given: For a 18600 W, 2400 RPM DC motor, the following values are given: Ra=0.089 Ω at…

Q: A 240-volt series motor has an armature resistance of 0.42 ohm and a series-field resistance of 0.18…

A: In tbe question A 240-volt series motor has an armature resistance of 0.42 ohm and a series-field…

Q: 4) Sketch the speed current characteristic for a common DC motor and describe the motor performance.

A: We have to sketch the speed current characteristic for a common DC motor and describe the motor…

Q: 300 V D.C. shunt motor runs at 300 r.p.m. ,takes 10 A and induces the emf of 50V. The armature and…

A:

Q: Discuss the advantages of flux weakening operating regime in a DC motor.

A:

Q: 1) P.f of inductive load is corrected by connecting . across it. 2) Open circuit test measures..…

A: As there are several questions and it is not mentioned which question to do and we are asked to…

Q: For a 18600W 2400rpm DC motor, the following values are given: Ra = 0.089 2 (value at room…

A: we have ωN=2πN60=2π×240060=80π=251.327 rad/secwe knowIa=PoutEMFsince Kv=0.851…

Q: 200 +21. If maximum torque of an induction motor is kg-m at a slip of 12%, the torque at 6% slip…

A: Given: The torque is 200 kg-m The maximum torque slip is sm=12% The objective is to determine torque…

Q: A shunt motor is rotating at 1500 rpm and is powered by a 120V voltage source. The current line…

A: As per the guidelines of Bartleby we suppose to answer first three subpart only for solution of…

Q: In a three-phase switched reluctance motor having six stator poles and four rotor poles, the pole…

A: Number of stator poles = 6 Number of rotor poles = 4  pulse width  =40 degree is same for stator and…

Q: For a 18600W 2400rpm DC motor, the following values are given: Ra = 0.089 O (value at room…

A: consider the given question;

Q: Explain how the pulsating mmf of a single-phase induction motor may be considered equivalent to two…

A:

Q: A 10 kW, 250 V Shunt motor has an armature resistance of 0.5 ohm and a field resistance of 200 ohm.…

A:

Q: Q / What is the benefit, purpose and conclusions of making single-phase induction motors .?

A: consider  the given question;

Q: A PWM signal is sent to a permanent magnet DC motor through an H-bridge circuit. The PWM frequency…

A: Given f=100 kHz V=16 V No load speed = 1500 rpm T= 2Nm   duty cycle = 20 % =0.2                    =…

Q: Derive the power equation for DC motor. Give the different loud-torgue :curves for each, DC. motors

A: Types of DC Machine Self Excited DC Machine Shunt DC Machine Series DC Machine Compound DC Machine…

Q: A 240 V, DC shunt motor draws 15 A while supplying the rated load at a speed of 100 rad/s. The…

A: Given- Voltage Vt=240 V. Line current I=15 A. Armature resistance Ra=0.5 Ω. Shunt resistance Rsh=80…

Q: Q5/ in a DC motor. List and describe the types of losses that occur

A:

Q: For a 18600W 2400rpm DC motor, the following values are given: Ra = 0.089 Q (value at room…

A: for the DC motor, power rating =18600 W rated speed =2400 rpm armature resistance (Ra) at room…

Q: A DC series motor is driving a loa whose torque is constant and independent of the speed. The motor…

A: We are given that:Speed: 1000 RPMField current: Armature current:  (unknown)Magnetic flux:…

Q: three phase induction motor,

A: Three Phase Induction machine- This Induction machine comprises of rotor and stator as it basic…

Q: a) Draw the equivalent circuit and torque-speed characteristic curve for a series DC motor. b)…

A:

Q: Q4) What is the effect in series motor if you assume V = Eb , with low resistance fielding winding ?…

A: If the back emf Eb becomes equal to the applied voltage V, the the armature current Ia will become…

Q: A 230V d.c. shunt motor takes 5A at no load and runs at 1000 r.p.m. Calculate the speed when loaded…

A:

Q: 1- To control the speed of an induction motor, the supply frequency is reduced by 10%. For the same…

A: Given, To control the speed of an induction motor, the supply frequency is reduced by 10%.

Q: A DC chopper is used in regenerative breaking mode of a dc series motor. The dc supply is 600 V, the…

A: Given, A DC chopper is used in regenerative breaking mode of a dc series motor has DC Supply, Vs =…

Q: Q4/B/ What are the principal characteristics of a series DC motor? What are its uses? Core

A: There are mainly three principle characteristics of dc series motor  Torque vs armature current :…

Q: The schematic and torque-speed characteristics of a series wound DC motor are shown below : Field…

A: (i)  In a DC series motor the flux is proportional to the armature current, this happens because the…

Speed control of motor

Speed control by DC motor-speed controller is required to realize variable speed drive. Whenever a motor drives a particular load, it is called drive, and variable speed drive refers to a load requiring variable speed. All this is obtained by a DC motor speed controller.