Answered: The power input to a 500 V, 50 Hz,…

The power input to a 500 V, 50 Hz, 6-pole, 3-Phase induction motor running at 975 rpm is 40 kW. The stator losses are 1 kW and the friction and windage losses total to 2 kW, Calculate the slip.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter32: Three-phase Motors

Section: Chapter Questions

Problem 6RQ: Name three factors that determine the torque produced by an induction motor.

See similar textbooks

Related questions

Q: For the circuit as shown below, find a single equivalent capacitor at terminals (a, b), where…

A: The circuit is given as We need to calculate the Cab.

Q: For the circuit in the figure, assuming that the op-amp is ideal in all respects: 1. Derive an…

Q: Example : In a 110 V, d.c. compound generator, the resistance of the armature, shunt field and…

A: Drawing the circuit for Shunt DC compound generator:

Q: Select all the statements that apply to an op-amp that may be considered ideal in all respects.…

A: An operational amplifier often referred to as an op-amp. It is a versatile electronic component used…

Q: What makes integrated circuits distinct from transistors?

A: The difference between the integrated circuit and the transistor needs to be briefed.

Q: 11. The output of a particular Op-amp increases 8V in 12µs. The slew rate is .......

A: Given information is shown below:Op amp output voltage increases by 8V in 12microsecond.

Q: Q2 (a) Figure Q1(a) Analogue to Digital Converters (ADCs) are used to change analogue signals to…

Q: v(t) ΤΩ oooo ΤΗ 0000- Μ ΤΩ Ξ 0000 VL(0)

A: Given:a circuit,To find: using KCL and KVL.

Q: A 200 V, 50 Hz, inductive circuit takes a current of 10A, lagging 30 degree. Find (i) the resistance…

A: Given information is shown below:

Q: Q2. A function e(t) is sampled and the resultant sequence has the z-transform as z³ - 4z 24-0.9z²…

Q: 2. In the following circuit, the switch closes at t = 0: (a) Find Vc(1) Vt> 0 ZA Ve 2/13H 250F 2012

A: Given:a circuit,To find:Vc(t) for .

Q: What is the difference between a standby generator and a UPS?

A: Differentiate between a standby generator and a UPS.

Q: What is the inverse Laplace transform (¹) of the following function? 8-6s = 2 s² + 11s-6 F(S)

Q: a. What is the function of the circuit shown above? b. If diode D2 is removed, what will be the…

A: Need to identify the function of the given circuit based on the given circuit design and also the…

Q: -pong For the control system shown, obtain the closed-loop transfer function and express it in the…

Q: Use separation of variables to convert the following partial differential equation into two ordinary…

A: Differential equations are types of mathematical equations where one or more unknown functions'…

Q: A d.c. shunt generator has shunt field winding resistance of 100 . It i supplying a load of 5 kW at…

A: The given points are:

Q: G(s) = = K(s² + 2) (s+3)(s+4) Give the values for all critical points of interest. Is the system…

A: GivenGive the values for all critical points of interest. Is the system ever unstable? If so, for…

Q: Use smith chart to determine the normalized input impedance at λ/8 from the load if: (a) its…

A: The given transmission line is .a) Find the normalized input impedance if normalized impedance is…

Q: Calculate the mesh current iz. Please enter your answer to 3 significant figures (i.e 0.123). V1 =…

A: Given CircuitGiven Data:V1 = 9.6 vV2 = 8.2 vR1 = 2 ohmR2 = 18 ohmR3 = 17 ohmTo find i2 = ?

Q: The switch in the circuit below has been open for a long time. At t=0 the switch closes…

Q: (a) Using KVL, KCL, the inductor law and Ohm's law, write down a state space model for this circuit…

A: The circuit is given ashere state variable is .

Q: 5. Find the capacitor voltage in the network shown in figure. If the switch closes at t-0. Assume…

A: In this question, we need to determine the voltage across the capacitor. Also need the rise time,…

Q: For a rotating brushed DC motor and from the list shown, what quantity is assumed to be proportional…

Q: What are the node voltages at point a, b and c? . Can we get the voltage across resistor R4 using…

A: Given Data:A DC resistive circuit with,DC voltage To Find:Node voltages a, b, and c.The voltage…

Q: A 4-pole, 50 Hz, 415 V, wound-rotor star-connected induction machine has a nameplate and a datasheet…

A: For a 3-phase, wound-rotor, star-connected induction, the following data is given:number of poles…

Q: Ques 5. Determine the electric current that flows in the circuit as shown in the figure below.

A: Given circuit is shown below:

Q: 1. 1. a) 1. b) 1. c) In the circuit below, the switch SW is initially open (i.e., disconnected).…

A: Switch is open at intial

Q: (b) Find all the line voltages, line currents, and phase currents in the circuit of Fig. for Q. No.…

Q: If every resistor in equals 2.2k, what is the value of RT?

Q: 11 www R1 R2 R3 Figure 2: A resistor circuit Given resistors R₁ = 100, R₂ = 70, R3 = 30 and current…

Q: 2. (a) For the circuit given in Fig. 2(a) find V₁, V₂ and V3 when V₁ = 48230° V 5-2-V₁ MTE O'lmF…

A: The circuit diagram,

Q: What is the flux density (B measured in milliTesla) is required to be present if the coil is…

Q: Vs + A R₂ R3 R4 с D www.m R₁ B All resistors = 10 kQ E

Q: Consider an RC circuit shown in Fig. 1, which is an example of a LTI system. The impulse response of…

A: An LTI system whose impulse response of the circuit is where, time constant capacitor is initially…

Q: Q5: Draw two of the following: A- Digital circuit of CPU Sequencer. Auk LIK

Q: Question 2: Calculate the total resistance RT and the total current Ir in the following circuit.…

Q: A- Find inverse Laplace transform (¹) for each of the following frequency-domain functions: 3 1-F(s)…

Q: 4. What is the minimum number of 2-volt cells needed to make a 12-volt battery? A. 6 OB. 12 C.4 D.…

A: In this question, we need to determine the number of cells to make 12V battery.

Q: calculate voltage out

A: In this question, we need to determine the resistance RC as shown the circuit.

Q: In a 10-trunk circuit, there are 180 calls in one hour. The average holding time per call is 2…

A: According to the question,In a 10-trunk circuit, there are 180 calls in one hour.The average…

Q: Solve the circuit by the most appropriate method. 4. 7 A ↑ 12 Q2 N 70 [x = ? 5Ω +²30 3 Ω ↑ 2 A

A: Given:a circuit,To find:The current Ix.

Q: Select all the statements that apply to an op-amp that may be considered ideal in all respects.…

A: Given statements,1. It has zero input resistance2. Its output resistance is zero.3. It has an…

Q: Q.7 If PDF of x is f(x) = 0.01 where 0 < x < 100, then expectation of x is (a) 50 (c) 1 (b) 25 (d)…

A: It is given that:

Q: 1-Why digital control? 2- What is ADC ? Draw the electronic circuit. 3- Explain the effect of…

A: According to the question,Number of sampling bits (n) = 3, 8, & 10;Sampling frequency (fs) = 20…

Q: To be able to receive and transmit effectively, it is necessary to use omnidirec- tional signals,…

A: Since you have posted multiple questions, we will answer the first question for you. If you require…

Q: Question 5V ww t = 0 2kQ2 1 μF 10ΚΩ v(t) The switch in the circuit below has been open for a long…

A: We need to find out voltage across capacitor for given circuit .

Q: A load formed from a resistance R=12 Ohms, in series with an inductance, L=45 mH is connected to an…

A: For an AC series RL circuit, the following data is given:resistance R=12 Ω,inductance L=45 mH,source…

Q: A Wheatstone bridge is employed to measure temperature using a sensor that will exhibit small…

A: The wheatstone bridge is shown below,We have to select an amplifier that would be best suited to…

Q: Two capacitors give an equivalent capacitance of 9.00 pF when connected in parallel and an…

Concept explainers

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.

Question

The power input to a 500 V, 50 Hz, 6-pole, 3-Phase induction motor
running at 975 rpm is 40 kW. The stator losses are 1 kW and the friction and
windage losses total to 2 kW, Calculate the slip.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1: Given

Step 2: Calculation

Step 3: Calculation

Solution

Step by step

Solved in 4 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

An 8 pole, 50 Hz slip ring induction motor runs at a slip of 2.67% on full load. The rotor resistance per phase of the winding is 0.2 ohm. What external resistance per phase must be added in the rotor circuit so that the motor now runs ate a slip of 17.33% such that the torque remains same in both the cases. (Ans: 1.1 ohm)
7- A 6-pole, 50-Hz, 3-0 induction motor is running at 950 rpm and has rotor Cu loss of 6 kW. Its rotor input is......kW (a) 120 (b) 60 (c) 6.3 (d) 66 8- The number of slip rings on a squirrel cage induction motor is usually (a)Two (b) Three (c) Four (d) None
A 110 V, 60 Hz, 6 – pole single phase induction motor 1/3 hp has the following equivalent circuit impedances: RI = 1.52 ohm, R2 = 3.13 ohm and x1 =2.10 ohm, x2 =1.56 ohm. Xm=58.2 ohm, The Friction, windage and stry losses =16W, the core loss = 35 W, For a slip of 0.05, calculation (a) input current, (b) power factor, (c) developed power, (d) output power, (e) speed (f) in put power (g) air gab power (h) T ind (i) T load 6) efficiency.
A 110-V, 1-phase, 4-pole, 60-Hz induction motor has the following circuit constants: R1 = R2’ = 1.6 ohm,X1 = X2’ = 1.8 ohm, Xm = 60 ohm; core loss is 16 W and friction and windage loss is 12 W. Determine theefficiency of the motor at 0.04 slip by using (a) the exact equivalent circuit and (b) the approximateequivalent circuit
A three –phase, 440V, 50 Hz, 6 – pole induction motor running at 950 rpm takes 50 kW at certain load. The friction and windage loss is 1.5 kW and the stator losses = 1.2 kW. Determine the output from the rotor. (a). 42.68 kW (b). 46.48 kW (c). 48.80 kW (d). 44. 86 kW
Q2 ) A 220-V, 1.5-hp 50-Hz,wo-pole, capacitor-start induction motor has the following main-winding impedances: R1=1.40 2 X1=2.01 S Xm= 105 2 R2 = 1.50 2 X2=2.01 S2 At a slip of 0.05, the motor's rotational losses are 291 W. The rotational losses may be assumed constant. . Find the following quantities for this motor at 0.05 slip: (b) Stator Power factor (e)Pout (f) Tele (a) Stator current (d) PAG (c) Input Power (g) TL (h) Pconv (i) Efficiency
A 400 V, 50 Hz 30 hp, three-phase induction motor is drawing 50 A current at 0.8 power factor lagging. The stator and rotor copper losses are 1.5 kW and 900 W respectively. The friction and windage losses are 1050 W and the core losses are 1200 W. The air-gap power of the motor will be
A three-phase, 60-Hz induction motor runs at 890 r/min at no load and at 840 r/min at full load. (a) How many poles does this motor have? (b) What is the slip at rated load? (c) What is the speed at one-quarter of the rated load? (d) What is the rotor’s electrical frequency at one-quarter of the rated load?
1.why the slip of induction motor is never zero, 2.what happens if the slip of induction motor is one, 3.what is the value of the slip for an induction motor at on load and full load
A 150 HP, 3-phase, 6 pole, 460 V, 60 Hz induction motor draws 195 A line current at full load speed of 1170 rpm and 0.85 pf. Solve for the percent slip at full load. (a). 2.5% (b). 3.0% (c). 2.8% (d). 2.0%
23. As load is increased from no load to full load on a 3-phase squirrel-cage induction motor, what happens to the ... A) slip of the motor? a) increases b) decreases c) remains the same d) none of the above B) speed of the motor? a) increases b) decreases c) remains the same d) none of the above C) torque of the motor? a) increases b) decreases c) remains the same d) none of the above D) stator current of the motor? a) increases b) decreases c) remains the same d) none of the above E) power factor of the motor?a)improves, b)get poorer, c)remains the same, d)none of aboveF) efficiency of the motor?a)increases b)decreases c) remains the same d) none
23. As load is increased from no load to full load on a 3-phase squirrel-cage induction motor, what happens to the ... A) slip of the motor? a) increases b) decreases c) remains the same d) none of the above B) speed of the motor? a) increases b) decreases c) remains the same d) none of the above C) torque of the motor? a) increases b) decreases c) remains the same d) none of the above D) stator current of the motor? a) increases b) decreases c) remains the same d) none of the above