What is the effect of saturation on speed and torque?
Q: Does a DC motor have to be turning in order for it to develop torque? a) yes b) no Most DC motor…
A: The Dc motor is electrical machinery that converts electrical and mechanical energy
Q: Tell us why the alterantor develop the counter torque when the load is connected to the armature.
A: When load is applied to an armature then the current is flowing from the generator to the load…
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Q: 4. Discuss the following (rated torque, starting torque, break down torque).
A: There are three type of torques in the motor: 1. Rated torque 2. Starting torque 3. Breakdown torque
Q: Click to see additional instructions What is the speed of a motor and power output under the…
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Q: . An 8-pole lap-wound d.c. motor has a 200V supply. The armature has 800 conductors and a resistance…
A: Given DC motor Number of poles P=8 Terminal voltage Vt=200 v Number of conductor Z= 800 Armature…
Q: Armature current of D.C. Motor at starting is high/low? Justify your answer What do you meant by…
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Q: Describe the responses of the armature and field currents, speed, and torque during starting.…
A: The graph that are showne here represent the characteristics of a dc series motor It can be…
Q: The armature of a 8 pole DC motor carries 314 conductors which are lap connected . For an armature…
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Q: 4- What is the effect of saturation on speed and torque?
A: When the frequency drops the V/Hz is high. This means that the motor needs a larger magnetic type of…
Q: A 4 pole, 220 V d.c. shunt motor, lap wound has 960 conductors. The flux per pole is 20 mWb.…
A: We have a DC shunt motor having, Pole (P) = 4 Voltage (V) = 220 V Lap conductor (Z) = 960 Flux per…
Q: What is the ratio of the outer cage torque to the inner cage torque of the indcution motor?
A: The equivalent circuit of the double induction motor:
Q: rpm (full load), 300 A (full load), 0.0935 armature resistance. The motor efficiency is 90 %.…
A: Since you have asked multiple questions in a single request, we will be answering only the 1st…
Q: Question 9 What factors affect the torque of a dc motor? (Select all that applies) A) Number of…
A: As per our company guidelines we are supposed to answer only first question kindly repost other…
Q: Q4) A 10 kW, 250 V, d.c., 6-pole shunt generator runs at 1000 RPM when delivering full load. The…
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Q: 100 A. If the motor developing half the torque. Choose the correct answer. Tal armature resistance…
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Q: 2. A shunt motor connected to a 120 V line runs at a speed of 1200 rpm when the armature current is…
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Q: d) Explain the difference between locked motor torque and the pull up torque of an induction motor.…
A: Locked rotor torque : The torque generated by an electrical motor, when it begins at rest or zero…
Q: 3. List the losses in SPIM. 4. What are types of SPIM. 5. What are the disadvantages of SPIM. 6.…
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Q: Why does the motor current increase as the load increases? What happens to the voltage falling due…
A: There is a series of field current in the motor, and the armature current is equal to the load…
Q: Explain how the magnetization curve is measured for a dc machine.
A: The magnetization curve is the curve which gives the relation between open circuit armature terminal…
Q: What two benefits do reactors in motors have?
A: Two benefits of reactors in the motor is given below: 1)Reactors protects, motor and its control…
Q: What is the relationship between Full-load Torque and Maximum Torque, Prove that?
A: To derive: The relationship between Full-load Torque and Maximum Torque: The full load torque τfl…
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: A 4 pole, 500V shunt motor has 720 wave connected conductors on its armature. The full load armature…
A: The solution is given below
Q: NEED ASAP PLEASEEE The torque measure at the pulley of a series motor is 130-Nm, the motor is…
A: In this question we will find output shaft power and iron friction losses..
Q: Q-4: An eight pole, 3-pháše I.M, reactance of 0.12/phase. At what speed is the torque maximum? What…
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Q: Derive the formula for a torque developed for the given shunt motor, simplex lap wound armature has…
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Q: The terminal voltage of a D.C. shunt generator drops on load because of all of the following reasons…
A: The terminal voltage of a D.C shunt generator drops on load due to decrease in generated voltage or…
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Q: QUESTION 19 The torque of a DC motor is at its minimum strength when the motor's armature loop is,…
A: Explanation: Correct option: At the neutral plane Reason: In DC motor a neutral plane is a central…
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Q: A6-pole, 24 KW, 120 V, DC machine has a Duplex LAP-woundarmature which has 72 coils with 10 turns…
A: Given data, P=4VT=120 VPout=21.5 kW
Q: In applications such as hoist, gates, movable bridges, street cars, locomotives, and transfer cars,…
A: The suitable motor for such types of loads is DC series motor. Because, DC Series motor gives high…
Q: Ia (A) 0.30 N (RPM) S.NO IL(A) 0.08 T(mNm) 84 P(watts) 10.9 1 1233 2 0.20 0.40 1217 203 25.9 3 0.26…
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Q: How are these two equations derived Maximum Power Criterion Maximum Torque Criterion
A: Given equations are of induction motor. First is maximum power second is maximum torque
Q: Q2- A 6 pole lap connected DC generator has 480 turns ,the resistance of each turn is 0.03 Q, the…
A: Generated EMFflux×speed×conductors60×polesparallel paths. Terminal voltage=genarated EMF-drop in…
Q: A 4 pole d.c. motor takes a 38.6 A armature current. The armature has lap connected 350 conductors.…
A: We have an DC motor with, Poles = 4 Also P = A so, A = 4 Armature current (Ia) = 38.6 A Armature…
Q: How many parallel current paths will there be in the armature of a 12-pole machine if the armature…
A: The solution is given below
Q: A 4 pole, 220V dc shunt motor takes 32A from the supply mains and develops a power of 5.6KW in its…
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Q: A 6-pole, 1750 rpm shunt motor has a lap wound armature with 580 conductors. If the flux per pole is…
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Q: How does the saturation in the machine affect the speed of shunt motor?
A: Affect of saturation on the speed of shunt generator
Q: :A: Answer (five) of the following questions: と。 C cannot travel for very longer distanse. If does,…
A: 1). AC can travel for long distance , all the transmission of power for very long distances done in…
What is the effect of saturation on speed and torque?
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- At rated load, a shunt motor draws an armature current of 100 A from a 240 V source while running at 1000 rpm producing a back emf of 228 V. At no load, the armature current drops to 5 A that produces a back emf of 235 V. How fast does the motor run at no load?What is the relationship between Full-load Torque and Maximum Torque, Prove that?hi tutor this subject is all about Dc machine Please help me ASAP
- 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 = 910 R.P.M, the speed at :maximum torque will be R.P.M 578.280 R.P.M 421.640 R.P.M 590.160 None O2 (B)- Indicate whether the following statements are true or false and correct the false statements I-A d.c. shunt motor is running with certain load. The effect of adding an external resistance in armature circuit is to increase the motor speed F Constant speed 2- A de series motor develops a torque of 30 N.m at 4 A of load current. if the current is increased to 6 A, the torque developed will be 67.5 N.m T 3-If the two field Windings are wound in such a manner that the fluxes produced by the two always help each other, the motor is called cumulatively compound F 4-The speed of d.c series motor is decreased if the armature current is increased T 5- To solve the Commutation Problem in large machines, this can be achieved by increasing the brush width. Tax In (Rm. Ps)4) A dc. ahunt machine while running as generator develops a voltage of 240 V at 1000 rpm. on no-load It has armature resistance of 0.5 12 and field resistance of 250 2. When the machine runs as motor, input to it at no-load ts 4 A at 240 V. Calculate the speed and efficiency of the machine when it runs as a motor taking 40 A at 240 V. Armature reaction weakens the field by 6%
- A 140 V, DC separately excited motor drives a constant-torque load at 1000 rpm speed. The armature and field resistances are 0.9 and 145 N, respectively. The motor draws a line current of 9 A at the given load and the field voltage is 115 V. Answer the following questions. 1- Calculate the resistance that should be added Radd to the armature circuit to Radd - ww In reduce the speed by 90%. Radd Ω 2- Calculate the efficiency of the motor without the added Radd N if the E. rotational losses is equal to 135.12 W. V, Rf % R 3- Calculate the efficiency of the motor with the added Radd N if the rotational losses is equal to 135.12 W. % 4- Calculate the resistance that must be added to the armature circuit to operate the motor at the holding condition. RaddA dc series motor having a resistance of 1.0 ohm between terminals runs at 800 rpm at 200V with a current of 15A. At what speed will it run when connected in series with a 5-ohm resistance, the current maintained at 15A?5. A stepper motor is being used as a crane motor in an expensive toy. The motor has the following properties: Holding torque = 2.52 kg -cm dynamic torque = 1.440 kg-cm detent torque = 0.360 kg-cm The motor turns a 3.81 cm diameter pulley around which a string is wound. How much weight can the crane lift? How much weight can the crane continue to support with the power on; with the power off?
- Click to see additional instructions What is the speed of a motor and power output under the following conditions? stall torque = 200 oz-in (1.41 N-m) no load speed = 4000 RPM applied torque 80 oz-in (0.565 N-m) speed = RPM power = W Note: it may be helpful to look at the equation T= T,-aw. You know some information about stall torque and no load speed, that you can use to find the speed at another torque (T) value3. A shunt motor running at 600 rpm takes 80 A at 250 V. Armature resistance is 0.1 ohm. Shunt field resistance is 50 ohms. If the iron and friction losses amount to 2188 W determine the shaft torque. A. 250 N-m B. 224 N-m C. 254 N-m D. 204 N-mA d.c. motor connected to a 460-V supply takes an armature current of 120 A on full load. If the armature circuit has a resistance of 0.25 2, calculate the value of the back e.m.f. at this load.