A 200 V dc motor takes 50 A in series and is operating at a speed of 1000 rpm when full of electrical components (load). Its resistance is 0.2 Q. What value of series resistance will offer a rated torque at 800 rpm?

A 200 V dc motor takes 50 A in series and is operating at a speed of 1000 rpm when full of electrical components (load). Its resistance is 0.2 Q. What value of series resistance will offer a rated torque at 800 rpm?

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter8: Basic Electric Motors

Section: Chapter Questions

Problem 11RQ

See similar textbooks

Related questions

Q: For the transfer function given, write the corresponding differential equation: G(s) = X(s) F(s) =…

A: use following formulae to find the differential equation . 1.dydt=sy(s) .2. d2Ydt2 = s2ys .

Q: 4 5) After having been open for a long time, the switch in the circuit shown below is closed at t=0…

A: Given:

Q: 2) A single -phase power transformer of 150 MVA, 15/200 kV has a Resistance in unit of 1.1% and…

A: Given: 150 MVA 15/200 KV, Single phase Power transformer Resistance per unit R = 1.1% = 0.011…

Q: Find the transfer function G(s) : = vi(t) R1 m 202 Vo(s) Vi (s) L1 4H using Mesh analysis C1 HH 3F…

A: Two domains—time and frequency(s) domains—are used to analyze the control system. The system…

Q: RL VLI AVL ∞ wwwwww 1 kQ 997 990mV 470 478 100 2 112 991.2mV 977.8mV 10 2 10.91 872.3mV 502 1Ω 0,5 Ω…

Q: 5V 470 ohm 100 ohm 1000 ohm. calculate the power dissipated on 1K ohm

Q: ЗА Т N1 202 2V N2 10 Ţ 2A

A: We need to find out the current for given circuit, first we will find out the voltage for given…

Q: Suppose the voltage generated from a signal generator is given by 44 v(t) = 2 sin for time t ranging…

Q: In the inverting amplifier of Figure 18.5, R; = 1k№ and Rƒ=2kM. Determine the out- put voltage when…

A: Inverting resistance Ri = 1 kΩ Inverting resistance Rf = 2 kΩ We have to determine the output…

Q: A 6 pole star connected three phase alternator, driven at 1000 rpm, has 108 slots with 10 conductors…

A: Given, A star connected three phase alternators has, Total number of poles, P=6. Speed, N=1000 rpm.…

Q: Find the transfer function G(s) = = vi(t) R1 202 Vo(s) Vi (s) + L1 4H using Mesh analysis C1 HH 3F…

Q: The critical frequency at a particular time is 12.5 MHz. What is the optimum working frequency for a…

A: Given data, Critical frequency fc=12.5 MHz. Angle of incidence i=650.

Q: 10. A network of switches a, b, c, and d is connected across the power lines A and B as shown in the…

Q: If a charge of 4.0 mC can transfer in a time of 2.0 ms. What current, in ?(Ampere), does this…

Q: A unit feedback system has the open loop transfer function G(s) = stable O marginally stable O…

A: Given: Unity feedback system, Hs=1. Open loop transfer function, Gs=104ss+102.

Q: m(t). (T/F)? Frequency modulation with m(t) is the same as phase modulation with Carson's rule…

A: We need to tell about phase modulation , frequency modulation and bandwidth and distortionless…

Q: PDCG EX] A courter method AID converter has a 500kne clacle and produces on D=196its. Determine the…

Q: QUESTION 8 A single phase 600v/120v transformer has a load of 30 ohms resistive and 20 ohms…

A: Given data, Voltage rating of transformer 600 V/120 V. Load impedance Z=30+j20 Ω.

Q: Linearize the graph and identify the following: (1) Linear regression equation; (2) Coefficient of…

A: Given values are change in current with increase in conductance value. Regression formula is given…

Q: E2.7 Find I, and I, in Fig. E2.7. Figure E2.7 Dom 6 mA 1mA 1.51,

A: We need to find out the current for given circuit.

Q: Find the time constant, initial and final capacitor voltage. 15 V (+ Time constant: 0.5 s A) Initial…

Q: What is the value of equivalent resistance between A and B for the circuit given below? A B 1022 ww…

A: Given circuit,

Q: RT 2 3 4 1 M 2 M W 3 4 FIND RT 1 2 M 1 M Σ2 3

Q: One 12 V battery supplies 100 mA to a boom box. How much energy does the battery supply in 2 h?

A: Given data, Supply voltage V = 12 V. Supply current i=100 mA = 100×10-3 = 0.1 A. Time t=2 hour =2×60…

Q: RT ≥2 3 4 M 1 M 2 M M W 3 4 FIND RT 1 M 2 M 1 M W 2 3

A: Concept used :- As circuit is formed with delta connection, so we will simplify it with delta to…

Q: 1. Using nodal analysis find i, and iz 6 A i1 >40 5 A ww ΒΩ 12 >40

A: The given circuit diagram is shown below:

Q: |2A 6Ω {6Ω ΤΑ 5Ω {17 Ω 17Ω 34 V 1.5 Ω

Q: 5 V 390 one's private de Figure 1 Bridge circuit 47052 Action 3.3 k R₁ - 33052 ww Love 1.2 k

Q: A 240/120 V 50 Hz single- phase transformer has its high voltage winding with 100 turns. The number…

Q: SOL 513 852 -s 1A u 252 2547 $35 vt 652 Find Total Resistance

Q: 3. Consider the transformer of Fig. P1.1. (a) (i) Determine V₁, V2, V3, V4, V5, V6, and Vo. (b)…

A: As per Bartleby guideline we need to answer the first three questions only. Kindly repost the rest…

Q: What is the total reactance in Figure 13-2? 2.0 H 60 Hz 37.68 Ohms 753.6 Ohms 376.8 Ohms Figure 13 -…

Q: Consider the transistor inverter on the right driving a long cable, modelled as a 0.1uF capacitance.…

Q: Figure 18.5 R₁ TIT X 12 B + R₁ - OV

A: Inverting resistance Ri = 1 kΩ Feedback resistance Rf = 2 kΩ We have to determine the output voltage

Q: Using current divider for the below circuit O 5 mA R₁ 14 2 kn R₂ 3 kn

A: Given data, Circuit diagram is given as,

Q: In the given circuit, if Vcd is 16 volts, what is the value of E in volts? 80

Q: (a) (b) (c) (d) (e) (f) Calculate the effective density of states in the valence and conduction…

A: The effective density, which is calculated by dividing a particle's mass by the volume that…

Q: Question- If the magnetic flux through each turn of the coil consisting of 200 turns is (t² – 3t)…

A: Given- Number of turns N=200, Magnetic flux- ϕ=t2-3t mW, Time t=4 s, To Find- The induced emf in the…

Q: Explain modulation on your own word regarding the following aspect: (No copy paste. I will check the…

Q: Explain the function of the circuit. 1 V Ri 192 Rinternal = 00 RL V Figure 4-1. Measurement of the…

Q: One 12 V battery supplies 100 mA to a boom box. How much energy does the battery supply in 4 h? Ⓒa.…

A: Given data, Supply voltage V = 12 V. Supply current i=100 mA. Time t=4 hour =4×60×60=14400 sec.

Q: (A) R1 What is the value of R3 in Fig.10 24 V R2 R3 (4A)

A: Given data, Circuit diagram is given as,

Q: Consider the circuit shown below left. ww 100 Ω 5 V SW1 500 mH ww 100 02 ww Rth Vth SW1 a ell 500 mH…

Q: B(A+C) + AB + BC

A: Given the Boolean expression:- F=BA+C+AB+BC

Q: A system is described by the following differential equation: d³y dy d³x dx d²y 6- +2+3y = 3- - 5- +…

Q: A three-phase squirrel cage IM has a starting current of 10 times the full load current and full…

A: Given a three-phase squirrel cage Induction motor has, Starting current, Ist=10Ifl. Full load slip,…

Q: For the op-amp shown in Figure, R1 = 4.7 Kohm and R2 = 10 Kohm. If the input voltage is -0.4V,…

A: if input is connected at the non inverting terminal of opamp , then it is called non-inverting opamp…

Q: 2. A unity feedback system is characterized by the open loop transfer function S+ 5 G(S)=…

Q: 16. Consider a simple positive phase sequence, three-phase, three-wire system operated at 50 Hz and…

Q: Determine the fourier interal integral representation of the square pulse figure in Plav

A: Given- Rectangular signal is- fx=Aox<λ20x>λ2 To find- Fourier transform for given signal=?

Concept explainers

Three Phase Induction Motor

The induction motor is an electric motor that runs on AC (alternating current) and it is of two type single phase motor that work on single-phase power supply and three-phase motor that work on three-phase power supply.

Question

A 200 V dc motor takes 50 A in series and is operating at a speed of 1000 rpm when full of electrical components (load).
Its resistance is 0.2 Q. What value of series resistance will offer a rated torque at 800 rpm?

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

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

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

a 220-v dc motor is running at a full load speed of 800 rpm and draws 100 A. calculate at what speed the motor will run when developing half torque. the total resistance of the armature and field is 0.1 ohm
Calculate the torque in newton-meter developed by a 440-V dc motor having anarmature resistance of 0.25 ohm and running at 750 rpm when taking a current of 60 A.
A series-connected dc motor operates at 1400 rpm from a source voltage of VT=75 V. The developed torque (load torque plus loss torque) is constant at 25 Nm. The resistance is RA+RF=0.1 Ω. Determine the value of resistance that must be placed in series with the motor to reduce the speed to 1000 rpm.
A 500 V shunt motor running at 720 rpm takes an armature current of 50 Amp,its effective resistance 0.40 ohm. When a resistance of 1.6 ohm is placed in series with the armature, what is the new speed? Assume that load torque is constant.
A DC series motor takes 40 A at 220 V and runs at 800 rpm. If the armature and field resistances are 0.2 Ω and 0.1Ω respectively and the iron and friction losses are 0.5 kW, find the torque developed in the armature. What will be the output of the motor?
A series motor takes 20Amp.at 400Volt to drive a fan at 200rpm.its resistance is 1Ω (field and armature) if the torque required to drive the fan varies as the square of the speed, find the necessary applied voltage and current to drive the fan at 300rpm?
A dc series motor takes 40 A at 220 V and runs at 800 rpm. If the armature and field resistance are 0.2 ohm and 0.1 ohm respectively and the iron and friction losses are 0. 5 KW, find the torque developed in the armature. What will be the output of the motor?
A 40-HP, 230-V., 8-pole, 25 Hz three-phase induction motor is running at 355 rpm at rated load. The torque lost by friction is 24 N-m. If the stator losses amount to 1,000 W., calculate the efficiency of the motor at this load.
The input to a 220 V dc shunt motor is 11 kW. Calculate (a) the torque developed, (b) the effi ciency, and (c) the speed at this load when the following particulars of the motor are given: no-load current = 5 A; no-load speed = 1150 rpm; armature resistance = 0.5 W; shunt-fi eld resistance = 110 W.
A 40Hp, 230V, 10pole, 50Hz three-phase induction motor is running at 585 rpm at rated load. If the stator loss amounts to 1000W and the efficiency of the motor at this load is 90%. Determine the torque lost by friction in lb-ft
A 230 V d.c series motor has armature and field resistances of 0.5 Ω and 5.0 Ω, respectively. It draws a current of 10 A from the supply while running at 1000 rpm. If an external resistance of 1 Ω is inserted in series with the motor, calculate the new steady-state armature current and the speed. Assume the load torque remains constant. ..
1. Calculate the no load speed of a DC motor with specs 12V Vdc KE=0.1 and flux of 2Wb 2. For a series motor, what is the effect with the torque if a. 2x the current, b. 2 times the speed, c. 2 times the voltage?