5. How does the saturation in the machine affect the speed of shunt motor?
Q: Explain any one type of enclosure used in DC motors with necessary diagram
A: Electrical machines can be either generator , transformers or motors. They can be either Ac machines…
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: 6. A shunt generator when running light as a motor at 1000 rpm takes 12 Amp from 115-Volt mains. The…
A:
Q: determine the frequency of rotor current?
A:
Q: discuss how the dc motor is used in washing machine
A: The answer as given below:
Q: What type of speed control method provides above the normal speed of the DC series motor? O a.…
A: Find method for above speed
Q: 6- If a D.C. shunt motor is working at no load and if the shunt field circuit suddenly opens (a)…
A: The answer is option c.
Q: a) Explain about the stator, rotor and carbon brush used in of AC motor.
A: For the above given question we need to define rotor, stator and carbon brushes used in AC motor.
Q: Why small voltage is built up immediately in rotating shunt machine eve without field excitation?
A: For every self excited generator there must exist some residual flux . When armature rotates…
Q: b) Draw the speed control block diagram of the DC motor, which can be controlled with armature…
A: Ac speed control motors- Constructio motor- the construction of the single phase and three-phase…
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: Diagram of dc shunt motor is drawn in below figure, From diagram field current is equal to, At no…
Q: Q1) How can run dc motor from right to left? Explain all cases.
A: For changing the direction of rotation of a DC motor one should understand how motors start…
Q: Q2 A - Explain how you can loaded of de motors? B - Compare between the output power and the input…
A: DC motor and DC generator
Q: 4. A synchronous motor starts but fails to develop its full torque. What could it be due to?
A: I will be attending only question 4. Synchronous motor: Synchronous motors are…
Q: what is dc shunt and series motor?
A: Motor is an electrical machine which converts the electrical energy into mechanical energy. DC motor…
Q: 2- Why in the flux control method (field resistance control)for controlling the speed of d.c. shunt…
A: N=(V-IaRa)/Kφ N=speed of dc shunt motor Ia=armature current or field current Ra=armature resistor…
Q: H.W/ Find out the sufficient answer with a brief explanation of the reason? write formula if it…
A: Note: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question…
Q: 19.a. The magnets that are used in the field of a quality DC PM motor are made from A. rare-earth…
A: Operation of permanent magnet DC motor depends on the flux and flux is produced by magnets. So the…
Q: discuss how the dc motor is used in refrigerator
A: Electrical machines can be either generator, transformer or motors. They can be either Ac machines…
Q: 4-What is the main function of a diverter used in series wound DC motor?
A:
Q: What effect does varying the DC incitation have on the stator currents of a synchronous motor?
A: Electrical machines can be either generator or motors. They can be either Ac machines or DC…
Q: DC motor's full-load speed have to be the same as its no-load speed in order for it to be classified…
A: DC Motor A DC motor is an electrical machine that converts Direct Current electrical energy into…
Q: 5 -Why it is not possible to start the d. C. series motor without load ?
A: As per Bartleby guidelines we are allowed to solve only one question,please ask the rest again. The…
Q: 3- What is the function of a commutator in the DC motor?
A: DC motor converts electrical energy into mechanical energy.
Q: What will happen if we do not fix the voltage of the D.C shunt motor as the load increases?
A: What will happen if we do not fix the voltage of the D.C shunt motor as the load increases?
Q: Q2/ A/ What will happen to torque if back emf and speed of the DC motor is doubled, and why?
A: As per Bartleby guidelines we are allowed to solve only one question,please ask the rest again. The…
Q: 1. When a synchronous motor is at working condition, is there induced electromotive force in the…
A: This is belongs to synchronous motors
Q: - In speed control of dc shunt motor, the armature voltage drop has the great effect on speed
A: Speed of the dc shunt motor is directly proportional to back EMF of the motor if there will be…
Q: When a series dc motor is operated without a load, which of the following conditions occurs? The…
A:
Q: Why Hysteresis Losses of DC motor is constant? O a. It depends on load O b. none of the above O c.…
A: The explanation is as follows.
Q: What types of motors contain brushes and a commutator? What is the function of these parts?
A: The kind of motor which contains brushes and commutator are DC motors.
Q: 1. Describe the constructional features and characteristics, of a induction motor that would be used…
A: Note: As per our policy, I have attempted the first question.
Q: 18. What is the principal reason for using star-delta motor?
A: Need to explain about star delta motor
Q: (3) Draw the electrical equivalent circuits for DC shunt motor and DC serial motor carefully and as…
A: The electrical equivalent circuit of DC shunt motor is shown below:
Q: Q3 A - Why the de shunt motor running at the infinity speed? B - Discuss the difference between D.C…
A: A- A dc shunt motor is a self excited dc motor in which the external supply voltage acts across the…
Q: B)- Draw a neat diagram to show the armature diverter method for speed control DC series motors
A:
Q: Briefly explain block diagram of electric drives.
A: So ,First we will understand what do we mean by electric drives and a little bit of history of it.…
Q: Questions: 1-why does the speed fall slightly when the d.c. shunt motor is loaded?
A: Since you have posted multiple questions and not specified which question to solve. We will solve…
Q: Attempt the following: a- Draw and explain a completes equivalent circet of Single phase induction…
A: Electrical machines can be either generator or motors. They can be either Ac machines or DC…
Q: 1. How can you reverse the direction of rotation of a synchronous motor? 2. What effect does varying…
A: 1. The direction of rotation of a synchronous motor can be reversed by interchanging any two of the…
Q: . What is the effect of the field excitation to the back emf of the synchronous motor?
A: Synchronous motor- It is an electric motor which is operated at AC supply. As the name suggest, its…
Q: A. What is necessary to start a synchronous motor to rotate from standstill? Describe the process
A: We are authorized to answer one question at a time, since you have not mentioned which question you…
Q: (2) The starting current of the DC motor is: a- Twenty times the rated current. b- Nine times of the…
A: There are two types of DC Motor. Separately excited DC motor and Self excited DC motor.In self…
Q: (B) Explain briefly the following Why the armature is connected as LAP winding with high torque low…
A: “Since you have posted a question with multiple sub-parts, we will solve the first three subparts…
Q: shunt generator delivers 1,000 W at 115 V to a load. If the armature resistance is 0 Ω, and the…
A: In this question we will find shunt field current in shunt generator....
Q: Make a sketch to show the speed torque characteristics of a shunt and compound motor
A: for the case of the shunt motor as we increase the torque the speed of the shunt motor decreases and…
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: When a series dc motor is operated without a load, which of the following conditions occurs? * O The…
A: It is known that for DC series motor load decides the amount of armature current .when load of motor…
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- hi tutor this subject is all about Dc machine Please help me ASAPWhich of the following is preferred to counter the effect of armature reaction in DC machine? O Use of main pole OUse of interpoles Use of series winding O Shifting of brushes4. What for brushes are employed in DC generator? 5. What is the function of armature in a DC generator? 6. What is the function of commutator in a DC machine in generator action. 7 Whieh diffe u0ad in
- Which of the following is preferred to counter the effect of armature reaction in DC machine? Use of main pole Use of interpoles Use of series winding Shifting of brushes1-The power output of the three phase machine is greater than the single phase machine. (TRUE/FALSE) 2-In thermocouple, when both the junctions are at the same temperature, the potential difference developed across both junction is zero. (TRUE/FALSE) 3-Due to decreased armature m.m.f., the armature reaction during load condition will increase and hence field flux will be distorted. (TRUE/FALSE) 4-While applying voltage in CRO, the grid is positive with respect to cathode. (TRUE/FALSE) 5-Losses in transformers are generally low and thus efficiency is high. (TRUE/FALSE)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 100-V series motor is used to drive a load through a pulley. This machine has anarmature resistance of 0.2 ohm and a series-field resistance of 0.25 ohm. When atorque of 25 N-m is applied to the pulley, the speed is 600 rpm. If SPL at this load is300 W, calculate the armature current.Here it is the equivalent circuit of and induction motor and it is per phase circuit my question is name for me the variable for example R1 is the winding resistance and so an the all variable and please show me a pic of the real machine with the variable for example for R1 happens because of the winding i need to see the winding in the real machine, please help me to understand wellWhen the DC machine is running under saturation condition, then flux per pole decreases due to armature reaction. Select one: O True O False
- One free with 8 pole number The armature radius of the excited DA machine is 20 cm and The ectin length of the armature is 30 cm. Poles arcade It covers 85% of its surface. Armature coils with 8 windings It consists of 36 coils. Windings double parallel winding has. Idle operation when armature is rotated at 1000 rpm terminal (Va) voltage is measured as 230 V. This according to the average magnetic flux below the poles what is the value of its density?The back e.m.f. in a d.c. motor . . the applied voltage and when it is equal to applied voltage the mechanical power will be maximized. The deciding factor in the selection of a d.c. motor for a particular application is its characteristic.A shunt would dc machine has an armature resistance of 0-12and a field resistance of 100. The machines rated terminal voltage is 250 V. Find the ratio of speeds as a generator and motor if line current is 50 A in each case.
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