55 hp, 440 V, 400 rpm DC shunt motor draws 107 A when operating at rated conditions. The motor has an armature-circuit resistance of 100 mW and a total field-circuit resistance of 55 W. Draw a schematic of the motor in the space below showing all known quantities (resistances, currents, voltages

55 hp, 440 V, 400 rpm DC shunt motor draws 107 A when operating at rated conditions. The motor has an armature-circuit resistance of 100 mW and a total field-circuit resistance of 55 W. Draw a schematic of the motor in the space below showing all known quantities (resistances, currents, voltages

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter5: Resistors

Section: Chapter Questions

Problem 1PA

See similar textbooks

Related questions

Q: z-transform of the sequence : y(n)=2.5u(n)-1.5u(n

A: In this question, we will find z transform of given sequence...

Q: If a current pass through an inductive, .magnetic energy will store in the coil True False

A: Inductors are used to store energy in form of magnetic field. When current is passed through the…

Q: Problem [12] Find the voltage on the capacitors under de conditions. 10 2 50 2 20Ω + 70 2 V2 C2 60 V

A: In this question we need to find a voltage across capacitor

Q: For a system shown in Fgure 3 R(s) + K C(s) s(s + 3) 1 s+ 5 Figure 3 (3a) closed-loop system. Use…

A: Given the system as shown below: a) For K=1, we need to sketch the Nyquist plot for the system and…

Q: Consider a solar cell with short circuit current I, dark current Id, series resistance R, with a…

Q: Q3: A radio frequency signal was received with signal to quantization power ratio of 39dB an…

A: The given signal is, x(t)=4 cos28.4πt×106

Q: Each entry in the IVT stores the address of the ISR for a given interrupt type. 10 O physical Obus D…

A: An interrupt is a disturbance, it is a condition that pauses the working of the…

Q: If an AC sine wave has a peak voltage of 338 V, what is the RMS and Average voltage of the signal? O…

A: Given data, An AC sine wave has a Peak voltage, Vm=338 V

Q: 50. In an R-L series circuit, R = 10 Q and X = 10 Q. The phase angle among applied voltage and…

A: Given, In a series R-L circuit R=10 ΩXL=10 Ω

Q: VEE. RB vRE B= 180 6 = Pnp x'tor %3D Is 1,2 kn. エ 6.2 kn 43 kn Deter minia) IB, Ie, TE , I, 1 Iz b)…

A: In this question we are simplify this circuit calculated the voltage and current in this network .…

Q: %3D For the system given in Figure 1, where G(s) (s+4)(s-6) R(s) + E(s) C(s) G(s) lanA Figure 1 (la)…

A: Given the system as shown below: G(s)=K(s+1)(s+10)(s+4)(s-6) a) We need to sketch the root locus…

Q: The closed loop gain (C/R) of the system shown below is: R Оа. -2 O b. 2 О с. -6 O d. 6

Q: A 3-phase, 400 V, 6-pole, 3-phase, 50 Hz, star-connected synchronous motor has a resistance of 0.5 N…

A: Given Data: Ra = 0.5 ohm/phase Xs = 4 ohm/phase V = 400 V P = 6

Q: Home Work 13: The input to a 11000 V, 3-phase, star-connected synchronous motor is 50 A. the…

Q: Q18. What will be the operating power factor of a 3-phase induction motor, whose ra Hz, 120 hp, and…

A: In this question we will find operating power factor of induction motor... Note :- as per our…

Q: This waveform, is the current in Half- bridge With Purely capacitor Load .circuit lo T/2 lo True O…

A: To convert the DC input supply into AC, inverters are used. The inverter can be single-phase or…

Q: EAl 500 465 450 420 430 400 300 200 100 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 4.75 5.2 6.15 Field…

A: We need to find generated emf and terminal voltage for given generator

Q: Problem 2 Consider a binary communications channel. Logical 0 is encoded with +1 Volt, and logical 1…

A: Given that logical zero was received and that +1 volt was delivered here, the probability necessary…

Q: 502 b 252 1002 10V 7552 2552 h 'f

Q: 1. Comment on your results. 2. Compare between the practical and theoretical results. 3. Find VB, Ve…

Q: 3. x(t) is the message signal that undergoes through the impulse train sampling to generate the…

Q: Given the closed loop transfer function described by the Laplace transfer function: 20(s+6) G(s) =…

A: Given, Closed loop transfer function, Gs=20s+6s+2s2+2s+4

Q: drive the loop gain of the sinusoidal oscillator?

A: The design of a oscillator needs a feedback network and the active device. The Active element in the…

Q: VDD Rp2 RpI RD1 M2 HE Pout R1 Cp2 M1 Vin H CG |Rs2 +Cs2 R2 Rs1 Cs1 Vss = 0 V SS what makes this a…

A: There are two types of amplifier connection one is cascode and the other is the cascade. The cascade…

Q: 1. Determine z- transform. Sketch pole-zero plot. Indicate ROC. x[n] = 2" u[-n] + (1/4)" u[n-1] %3D

Q: *S. Using superposition, determine the current Iz for the net- work of Fig. 18.116 (u = 20; h =…

A: The total response across any element is equal to algebraic sum of individual sources acting alone.

Q: 1. What is an Inductor? 2. How does the inductor work?

Q: *2. Using superposition, determine the current Iz for each network of Fig. 18.110.

A: As per the guidelines, we supposed to answer one question at a time so please ask other questions…

Q: Full the following blank (1100 0001 0111 0110)BCD (5321) +(1000 1010 0111)BCD7421=()8

A: It is given that:1100 0001 0111 0110BCD5321+1000 1010 0111BCD7421=8

Q: Given the closed loop system, what is the forward transfer function? (1+ K)a +1 0.1 O a. K/[(1+ K)s…

A: In this question we need to choose a correct option

Q: 6-Define transmission parameters 7- Why ABCD parameters are also called as transmission parameters?…

A: As per the guidelines given, We can only provide the solution of the one question in multiple type…

Q: Find the transfer function of C(s)/ R(s) in a system (A) having a positive feedback (H). R(s) + C(s)…

A: Given:

Q: 1. A silicon p-n junction (Na = 106 cm and Na 4 x 106 em') is biased with Va = -3 V. Calculate the…

Q: The power input to a 415 V, 50 Hz, 6 pole 3-phase induction motor running at 975 rpm is 40 kW. The…

Q: 50% conduction in one cycle no conduction 100% conduction in one сycle 25% conduction in one cycle…

Q: 2- For the circuit in procedure, apply the superposition theory to calculate theoretically the…

A: When more than one source is present in the electrical network, the Superposition theorem is used.…

Q: If the load is resistive, then the power factor will be O 1 Leading O Lagging

A: Considering the power formula, S=P+jQ S is apparent power P is active power Q is reactive power

Q: a. According to Gauss's theorem, the surface integral of the normal component of electric flux…

A: Repulsion force: If there are two similar charges then in between them a repulsion force exists and…

Q: MOSFET Amplifier: 1. Determine the drain-to-source voltage (VDs) if VDD = +18V and Rp = 6202. The…

Q: rotational system, an inertia "J" is subjected to a given torque T(t).. find its transfer function…

A: We need to select correct option for given system

Q: 1) Estimate the shape of magnitude response of H(z). Take b=0.5. 2) What is the type of system…

A: Hz=1-b1+bZ-1, b=0.5given, Hz=0.51+0.5Z-11Hejω=1-0.51+0.5ejω=0.51+0.5ejω…

Q: An electrodynamometer-type wattmeter has a current coil with a resistance of 0.1 Q and a pressure…

A: Given Data (a) V = 250 V I = 12 A pf = 1 (b) V = 25 V I = 12 A pf = 0.4

Q: If E1 = 120∠30° V and E2= 120∠ − 30° V solve for: a. current through the load IL assuming E2 is…

A: As per the guidelines of Bartley we supposed to answer first three subpart only

Q: An electrodynamometer-type wattmeter has a current coil with a resistance of 0.1 Q and a pressure…

Q: Full the following blank (1110)Gray + (11010000)2- (11001101)Ex-3 = ( )16 -17 -14 +69 +11 None of…

A: In this question, We need to determine the following output in hexadecimal

Q: A two-pole three phase 60HZ Y-connected AC generator has 9 slots per pole and 6 conductors per slot.…

Q: The B Dc for a BJT is the ratio of collector current to emitter current. True False

A: Given: The statement is "The βDC for a BJT is the ratio of collector current to emitter current".

Q: A 55 hp, 440 V, 400 rpm DC shunt motor draws 107 A when operating at rated conditions. The motor has…

A: In this question, We need to choose the correct options If A 55 hp, 440 V, 400 rpm DC shunt motor…

Q: 1. For the satellite signal of x(t) = 4cos²200nt + 2cos400nt + 8sin300nt + 5, find the Nyquist rate…

A: Since multiple questions are present (1, 2 and 3) and they are independent questions, as per the…

Q: 45. A circuit has an impedance of (1-i 2) Q. The Susceptance of circult is (i) 0.1 S (ii) 0.2 S…

A: Consider the formula for the admittance is, Y=1Z Here, Z is the impedance. Simplify the formula for…

Concept explainers

DC Series Motors

A DC motor is a type of electric motor which converts electric energy into mechanical energy. The forces that are produced by the magnetic field are what those common types of motors rely upon. Either electro-mechanical or electronic, all types of DC motors have some internal mechanism to change the current direction in part of the DC motors. As the DC motors could be powered from existing DC lighting power distribution systems, these motors were the first form of motors widely used. By changing the strength of the current in its field winding or by using a variable supply voltage, the speed of the DC motors can be controlled over a wide range.

Question

100%

A 55 hp, 440 V, 400 rpm DC shunt motor draws 107 A when operating at rated conditions. The motor has an armature-circuit resistance of 100 mW and a total field-circuit resistance of 55 W.

Draw a schematic of the motor in the space below showing all known quantities (resistances, currents, voltages and load). Show only symbols for unknowns.

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 3

VIEW

Step by step

Solved in 3 steps with 2 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

A squirrel-cage induction motor is operating at 1175 RPM and producing a torque of 22 Ib-ft. What is the horsepower output of the motor?
The speed of a 230 V shunt motor is to be reduced from 900 r.p.m to 600 r.p.m. The resistance of the armature circuit is 0.3 ohm. When the motor current is 30 A, speed is 900 r.p.m. If the current reduces to 20 A at lower speed, what arrangement should be made? Neglect any effect not included in the data given.
A dc shunt motor operating at an armature terminal voltage of 125 V is observed to be operating at a speed of 1180 r/min. When the motor is operated unloaded at the same armature terminal voltage but with an additional resistance of 5Ω in series with the shunt field, the motor speed is observed to be 1250 r/min. i. Calculate the resistance of the series field. ii. Calculate the motor speed which will result if the series resistance is increased from 5Ω to 15Ω.
A dc shunt motor rated at 250V, runs at 1000rpm draws a current of 25A. Determine the speed if the field is weakened by 3% for the line current of 50A. The armature and field resistances are 0.2 and 250 ohms respectively. Brush drop may betaken as 1V per brush.
A series motor runs at 800 r/min when the voltage is 400 V and the current is 25 A. The armature resistance is 0.4 ohm and the Series field resistance is 0.2 ohm. Determine the following: (a) The constant of the motor. If the speed decreases to 600 r/min,the torque increases by 32% and the field increases by 10%, determine the following: (b) The new armature current. (c) The new field current. (d) The new total resistance of the motor in ohm. (e) The additional resistance inserted in series with the motor in ohm.
A 10-hp (7.46 kW), 250-V. shunt motor takes a line current of 5 A. when runninglight. Calculate the efficiency when delivering full load output, if the armature andfield resistances are 0.5 Ω and 250 Ω respectively. At what output power will theefficiency be maximum?
A dc shunt motor runs at 900 rpm. from a 400 V supply when taking an armature currentof 25 A. Calculate the speed at which it will run from a 230 V supply when taking anarmature current of 15 A. The resistance of the armature circuit is 0.8 ohm. Assume theflux per pole at 230 V to have decreased to 75% of its value at 400 V.
A 230-V dc shunt motor takes a current of 5A at no-load. The resistance of armature and field circuits are 0.50 ohm and 230 ohm, respectively . If the maximum efficiency occurs at full load current, what is the value of this current? A 14 hp, 240 v shunt motor draws an armature current of 50 A at full-load. The armature resistance including brushes is 0.25 ohm. Calculate the total resistance of a starting box which wound permit this motor to develop a starting torque equal to twice that at full load.
A shunt motor running on no-load takes 5 A at 200 V. The resistance of the field circuit is 150 Ω and of the armature 0.1 Ω. Determine the output and efficiency of motor when the input current is 120 A at 200 V. State any conditions assumed.
A dc series motor operates at its full rated load at 1500 rpm. The line condition are 125 V and 10 A. The motor has an armature circuit resistance, including the commutating field, of 1.25 ohms and a series field resistance of 0.425 ohms . Assuming that the field flux changes linearly with field current, what will be the motor speed if the load is such that the line current drops to 6.25 A?
A shunt motor is rotating at 1500 rpm and is powered by a 120V voltage source. The current line resistance is 51-A and the shunt field resistance is 120ohm. If the armature resistance is 0.12ohm, Determine: a) the armature current, b) the back emf (E), c) the total power that is supplied to the motor, d) the power absorbed by the armature, e) power dissipated in the armature. Please answer all subpart either dislike please I will like it please
A 320V shunt motor takes a total current of 80A and runs at 1000 rev/min. If the iron, friction and windage losses amount to 1.5 kW, the shunt field resistance is 40 ohm and the armature resistance is 0.2 ohm, determine the overall efficiency of the motor