Speed control of D.C motor by variation of field flux results in Zero power drive O Constant Power Drive Constant Torque Drive Variable power Drive
Q: shunt dc motor has armature voltage = 150 V, armature field resistance 100 2, nd armature resistance…
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Q: The 200 V shunt motor has input and output powers of are 35 and 32 Hp respectively. The field and…
A: In this question, The 200 V shunt motor input power 35HP output power =32 Hp The field and…
Q: A 120 V dc shunt motor having an armature circuit resistance of 0.2 ohm and field resistance of 60…
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Q: A 220 V DC shunt motor takes 3 A at no- load. It draws 25 A when running at full- load at 1500 rpm.…
A: Drawing the circuit diagram for the given case:
Q: OV DC series motor takes the line current of 30 A and runs at 750 rg d if torque is increased to 50…
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Q: A 240V d.c shunt motor has an armature resistance of 0.1 Ώ and it is running with 1000 rpm , the…
A: Back emf=terminal voltage+ drop in armature resistance. We will find total armature current by…
Q: The armature of a 230 Volts shunt motor has a resistance of 0.18 ohm. A resistance is inserted in…
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Q: A 220V d.c shunt motor is having armature current of 10 A and torque of 10 N-m.Find the torque when…
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Q: A DC compound motor has shunt field resistance of 5002 and series field resistance of 22. Shunt…
A: Shunt field resistance of the motor (Rsh) = 500 Ω Series field resistance (Rse) = 2 Ω Shunt field…
Q: The armature resistance of 250 V DC shunt motor is 0.5 ohm. Its armature current is 20 A when…
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Q: 250 V d.c. Shunt motor has an armature current of 20A when running at 1000 r.p.m at full load. The…
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Q: A 12 Hp 220V dc series motor has an armature and field resistance of 0.25 ohm and 0.2 ohm…
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Q: 2. A 110 V shunt motor has a field resistance of 55 ohms and armature resistance of 0.1 ohm. The…
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Q: A shunt motor is taking 240A at 100V. Armature resistance is 0.0152 and the shunt field resistance…
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Q: A 480 V, 100 kW, 0.85 PF leading, 50 Hz, 6 poles, Y-connected synchronous motor has a synchronous…
A: Given 480 V, 100 kW, 0.85 pf Lead, 6 pole synchronous reactance Xa =1.5 Ω speed range 300 rpm to…
Q: - In speed control of dc shunt motor, to increase the speed above the rated value: * a) Armature…
A: Back emf, Eb, of generator is given by the following equation, Eb = (PØNZ)/(60A)where, P = no. of…
Q: If the voltage applied across the armature of a DC shunt motor is increased by 5% keeping its load…
A: generated emf in armature E = flux ×speed×no. of conductors60 ×no. of polesno. of parallel paths…
Q: Q11-250 V d.c. Shunt motor has an armature current of 20A when running at 1000 r.p.m at full load.…
A: In this question dc shunt motor is given....We have to find out series resistance added in armature…
Q: Armature resistance of a 230V shunt motor is 0.6Q and no load current is 2.5A. When the rotor is…
A: The data given in the question is: V=230V, Ra=0.6Ω, Ino-load=2.5A, Iload=60A, Nloaded=1500 rpm,…
Q: Calculate the speed when loaded
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Q: Series motor takes (80 A) on full-load voltage (400 V) and runs at (1000 r.p.m) the armature…
A: Given, a series motor having Armature current, Ia= 80 A Supply voltage, V= 400 V Speed, N1= 1000 rpm…
Q: QUESTION 5 In a well-compensated D.C. shunt motor, speed is O Inversely proportional to the armature…
A: Motor: An electrical motor is a device where by giving electrical input we got mechanical output…
Q: 5. A 10 Hp 240V dc shunt motor has an armature and fie ohm and 120 ohms respectively. The full load…
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Q: A 110 V shunt motor has a field resistance of 55 ohms and armature resistance of 0.1 ohm. The motor…
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Q: A 200 V d.c. shunt motor takes 4 A at no-load when running at 700 rpm. The field resistance is 100…
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Q: The armature torque of a d.c. motor runing at 800 rpm is 99.3 Nm and shaft torque is 93.3 Nm. The…
A: Given a dc motor having, Running speed at, N = 800 rpm Armature torque, τa=99.3 Nm Shaft torque,…
Q: The magnetization curve of a 100-Volt series DC motor is shown in the figure below. At full-load,…
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Q: If current taken by series motor is increased from 10 A to 13 A, the percentage increase in its…
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Q: For a 7.46 kW, 200 V dc shunt motor with full load efficiency of 85% has armature resistance of 0.25…
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Q: 2. A 5 Hp, 220-v, 1200 rpm shunt motor has armature circuit resistance of 0.175 ohm and a shunt…
A: Since you have asked multiple questions in a single request, we will be answering only the 1st…
Q: For a slip of 0.05. compute the output current, power factor. power output. speed, torque, and…
A: For a single phase iduction motor, Pole = 4 Supply voltgae = 110V Frequency = 60 Hz
Q: A 230-V, shunt motor has armature resistance of 0.5 Ω and field resistance of 100 Ω . Determine the…
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Q: - In speed control of dc shunt motor, to increase the speed above the rated value: a) Armature…
A: Back EMF, Eb, of a dc motor is given ny the following equation, Eb = PØNZ/60A where, P = no. of…
Q: A 250 V, 37 KW, dc shunt motor has to expert a maximum torque of 150% of full load torque during the…
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Q: A 220 V dc shunt motor develops a total torque of 100 N-M and takes 29A at 600 rpm. The armature and…
A: Torque of DC shunt motor = K×(Flux × armature current). Back emf = K1 × ( flux × speed). Where K…
Q: Design a suitable 8 section starter for a 14.92 kW, 250 volt, 1000 rpm d.c. shunt motor from the…
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Q: suggest amethede to raise the speed of de motor From boorif.m to 9ooxif.m at constant torque then…
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Q: A 230 V, 50 A de separately excited motor has an initial speed measure at 850 rpm and an armature…
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Q: A 50-kW, 250-V short-shunt compound motor has the following data: Ra = 0.06 ohm, Rse=0.04 ohm and Rf…
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Q: In the series motor, the armature resistance is 0.1Ohm and the field resistance is 0.15Ohm and it is…
A: Referring to the question, the given data are:
Q: A 5HP 230V 1500 rpm shunt motor has an armature resistance including brushes of 0.175 ohm, the shunt…
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Q: A 130 V, DC shunt motor drives a constant-torque load at 1100 rpm speed. The armature and field…
A: The Diagram is given as
Q: 2000rpm, 240V DC shunt motor has armature resistance of 0.80 and the field resistance is XQ. When…
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Q: 4-pole, 270 V squirrel cage induction motor has a rotor speed of 1,600 rpm and a rotor resistance…
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Q: he starting torque of a 25-hp 720-rpm synchronous motor is 150 per cen ted torque. Calculate the…
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Q: Q11-250 V d.c. Shunt motor has an armature current of 20A when running at 1000 r.p.m at full load.…
A: We need to find out the value of resistance to insert in series with armature to decrease the speed…
Q: A 220 Volt shunt motor has an armature resistance of 0.5 ohm and takes a current of 40 Amp on full…
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Q: A 440-V, shunt motor has armature resistance of 0.8 Q and field resistance of 200 Q. Determine the…
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- A 200V d.c shunt motor has an armature resistance of 1 Ώ and it is running with 100 rpm , the armature current of 10A. Assume armature current is constant. Find the speed when external resitance added with armature is double that of actual value. a. 102.6rpm b. 94.7 rpm c. 88.9 rpm d. 89.5 rpm2 Explain different modes of operation of a 3 Ø Induction Motor with reference to the value of slip with the neat sketch of speed torque profiles. a. 0 < Slip < 1 b. 0 < Slip < -1 c. Slip > 1A 240V d.c shunt motor has an armature resistance of 0.1 Ώ and it is running with 1000 rpm , the armature current of 10 A. Assume armature current is constant at any case. Find the total armature resitance required to reduce the speed to 500 rpm. a.11.5 ohms b.12.05 ohms c.10.5 ohms d.2.05 ohms
- 2. A 6-pole, 220-V shunt motor has a wave connected armature with 116 turns. Armature resistance including brushes is 0.25 ohms. Armature current is 12 A at a no load speed of 960 rpm. What is the useful flux per pole? A. 21.7 mWb B. 19.5 mWb C. 24.2 mWb D. 28.2 mWbA 250-V shunt motor runs at 1500rpm at no-load and takes 8A. The total armature and shunt field resistance are respectively 0.12 ohm and 250 ohm. Calculate the speed loaded and taking 50A. assume the flux to be constant.A shunt motor runs at 1200 rpm on a 420 V circuit and current taken in 30 A in addition to the field current. What resistance must be placed in series with armature in order that the speed may be reduced to 600 rpm, the current through the armature remaining same. Ra=3ohm given
- 6 ) A 250 v shunt motor on no load runs at 1000 rpm and takes 5 A. The armature and shunt field resistances are respectively 0.2 and 250 n Calculate the speed when loaded and taking a current of 50 A , if the armature reaction weakens the field by 3 % .1-D.C. shunt motor maintains a more constant speed under varying load. (True or False) 2-Dc shunt motor is best suited where low starting torque is required. (True or False) 3-The speed of d.c series motor is increased if the armature current is increased. (True or False)Determine the output torque in N-m and Ib-ft of an 11 hp, 4-pole, 60Hz, 3-phase induction motor is taking 10,237 watts from the line. Core loss is 326 watts; stator copper loss is 639 watts; rotor copper loss is 501 watts and the friction and windage losses are 136 watts.
- A 4 pole, 230V , DC shunt motor develops an output power of 12 kW . If Ra = 0.03 ohms , and Rsh = 75 ohms, the armature current is AnswerA 10-hp,4 pole,25Hz,3-phase induction motor is taking 9100 watts from the line.Core loss is 290 watts,stator copper loss is 568 watts, rotor copper loss is 445 watts and the friction and windage loss is 121 watts. Determine the output torque in newton-meters. Ans. 103.3 N-mSolve the following problems. Write the complete solutions in two decimal places. 1. A shunt generator delivers 200 A at 240 V full-load. It has a full-load efficiency of 92%. The stray power loss is 700 watts while the shunt field coil resistance is 50 ohms. Find the armature resistance, armature current when delivering maximum efficiency and the maximum efficiency.