A 20 kW, 480-V shunt generator, having an armature resistance of 0.15 Ω and a field resistance of 200 Ω, delivers full-load at rated voltage and 1200 r/min. The machine is now run as a motor while taking 20 KW at 480 V. What is the speed of the motor

A 20 kW, 480-V shunt generator, having an armature resistance of 0.15 Ω and a field resistance of 200 Ω, delivers full-load at rated voltage and 1200 r/min. The machine is now run as a motor while taking 20 KW at 480 V. What is the speed of the motor

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter29: Dc Generators

Section: Chapter Questions

Problem 1PA: You are working as an electrician in a large steel manufacturing plant, and you are in the process...

See similar textbooks

Related questions

Q: 3. a) Calculate Vo (DC and AC) for the following circuit. b) Calculate Ai (current gain) given that…

A: For the given multistage amplifier circuit the value of output voltage for both DC and AC needs to…

Q: system are given below: (input) i(t) = 2u(t) (output) v(oo) (in steady-state) can take any value…

A: For the given RLC circuit, we need to determine:variation in resistor values at steady-state, and…

Q: 4. Step function can be used to define a window function. Thus u(t-1)- u(t-4) defines window 1 unit…

A: Given: A step function is used to define a window function as u(t −1)−u(t−4) defines a window 1 unit…

Q: For each of the circuits given below, assume an ideal diode. For which of the following circuits is…

A: In the given questions we need to calculate the voltage across diode D2.

Q: 2. For circuit B: a. Set the direction of the current flow, then obtain the mesh and nodal equation.…

A: For the given circuit the node and mesh equation needs to be obtained and the voltage across the 20…

Q: 7. Two balanced 30 loads are connected in parallel across a120-volt, abc, 30-source. One load has a…

A: The question is about finding power factor and line current.

Q: Let R = 2 kΩ in the circuit of Fig. 5_5. What is Rin? R 2 ΚΩ 3 ΚΩ 24 ΚΩ 3.27 ΚΩ Fig. 5_5 R Rip

Q: Given the PMOS circuit in the Figure below, with parameters as listed. VDD=6V, IVtpl = 0.7V, kp' =…

Q: 3. State the difference between NAND gate and OR gate. Sketch the logical symbol of each. Develop…

A: The object is to determine the difference between the NAND and OR gates.

Q: Question 2 Consider the two signals c₁ (t) = 4 cos(50000πt) and c₂(t) signals, m₁(t) and m₂ (t) with…

A: Given:the signals m1(t), m2(t) have spectrums as,with carrier signals, we need to:i) draw real and…

Q: Problem 2.5 Find the electric field a distance z above the center of a circular loop of radius r…

Q: Solve for ic at +=0², 0+ +20V + =0 lon wwww to wwww 300 dic and 00. ½/₂F 201 www

A: The given circuit isC=12F.We need to find ic(t) at t = 0-, 0+ and ∞.

Q: Describe the process of designing and manufacturing microchips. What are the key steps involved in…

A: Designing and manufacturing microchips also known as integrated circuits, is a complex and highly…

Q: (4) ( Use the superposition principle. to find the output voltage of the arwit shown below in terms…

A: Given circuit is output voltage Vo =? in…

Q: Calculate 140 and V₂0. 400V N02 4A 400 4V20 50.0 8A V₂0- 200 200V

A: The given circuit isWe need to find i40.

Q: Consider the given circuit. C V b cn 2 n Vbn Rw www an Rw www a C °V. B °V. Zp V. Rw ww N Each…

Q: -Draw one circuit with supply specification, having five lamps are in parallel controlled from one…

A: The power supply specification including voltage and current, should be determined based on the…

Q: For the circuit shown below, use the Laplace transform approach to find the voltage across the…

A: The circuit is given asherewe need to calculate the voltage across capacitor for t>0.

Q: = Find the power of the voltage source Vin in Watts given the following operational amplifier…

A: On applying KCL at R1 we get V1/R1+(V1-Vo)/R2 =0 =>V1(1/R1 + 1/R2) = Vo/R2=> V1*(R2+R1)/R1*R2…

Q: Please answer all subpart in short Please all subpart is compulsory in short term and in typing…

A: i)Given a circuit, we need to find the changes in node voltages at nodes A and B if a 4th resistor…

Q: An RL circuit has an emf of 5 V, a resistance of 50, an inductance of 1 H, and no initial current.…

A: In this question, we need to determine the current in the RL circuit. We know, the inductor acts as…

Q: Express the following decimal number in binary and hexadecimal forms: 171.

A: In this question, we need to determine the decimal to binary and hexadecimal numbers.

Q: What is the equivalent resistance of the following resistor network? Please give your answer in ΚΩ.…

A: We need to find out the equivalent resistance for given circuit by using of series and parallel…

Q: Apply the gain formula to the SFGs shown in Fig. Y₂ Y Y₂ Y₂ Y₂ Y₁ Y₁Y₁ GA G₁ F -H₂ (b) to find the…

Q: Explain the process of semiconductor fabrication used to manufacture microchips. How do advanced…

A: To explain:the process of semiconductor fabrication used to manufacture microchips.Also we need to…

Q: 2) For the circuit shown in Figure 2, find Vo using the node voltage method. 4mA (↑) Iks} Ikr 32 кл…

A: In this question, we need to determine the voltage Vo using the nodal analysis.

Q: 1. KVL and Ohm's Law: Find the current, I, and voltages, V₁, V2, V3, V4, Vs and Vab in the following…

Q: Consider an oscillating magnetic dipole with magnetic dipole moment m = moe it. Calculate the…

Q: R₁ LO Is ↑ VR2 R3 www R₂ R₁ Vs R5 For the above circuit, assume the following: Vs = 15V, Is = 2mA,…

Q: VG 1:10 0,18 j0,24 Z fine. 10:1 Z₂

Q: What is 1/(j*2pi*f) convolved with sinc((f-f_c)/B) where f_c is the center frequency and B is the…

A: To calculate the convolution of and since , we can perform the convolution in the frequency domain.…

Q: Y(s) Exercise: Reduce the following block diagram to a single block, Find R(s) R(1) G₁ H₁ H₂ G₂ C(s)

A: First label the take-off point and summing point of the block diagram. Move to take off point 5…

Q: Us 800 Ω www 1250 Ω + υπ UΔ 3000 υς 5.500 Ω 1

Q: E = 30 V 20⁰ Z₁ = Is= Ic= V₁ = pf = I₂ R₁ www 3 Ω ZT N N N + V₂ moo X = 6 Ω lagging or leading R₂…

Q: A B- CarryIn 53 + Op1/Op0 2 CarryOut 0 MUX 1 Sum 2 → Result

A: for the given mux circuit it is asked to complete the truth table and describe it's general purpose

Q: 3. Find the Thevenin equivalent circuit at terminals a-b and the Norton equivalent circuit at…

Q: Measurements on a plane wave of frequency 500 MHz traveling through two different lossy dielectrics…

A: According to the question, a plane wave of a frequency 500 MHz traveling through two different lossy…

Q: 1. Use step function to write the expression for each of the functions shown in the following…

A: The unit step function often denoted as "u(t)" or simply "step(t)," is a mathematical function…

Q: Describe the role of microchips in modern electronic devices. What are the fundamental components…

A: Describe the role of microchips in modern electronic devices. What is the fundamental components and…

Q: H1. a sampling technique was used in digitally encoding analog data and 2048 distinct voltage…

Q: The value of the 3 resistances when connected in star connection is 10 ohm 5 ohm 2.32ohm,1.22ohm,…

A: The question is about finding star equivalent.

Q: 13. What must be the value of the load resistor RL so that maximum power is transferred to it? What…

A: The given circuit isWe need to find the value of the load resistor RL so that maximum power is…

Q: Ra=0.52 La = 50 mH Va ia Ra W La 4. What is the "order" of this characteristic equation? 5. What is…

A: The characteristics equation of a circuit typically refers to the equation that describes the…

Q: Determine y(t) 1) Y(s) = s+1/(s+2)(s+3) 2) Y(s) = s+3/(s+1)^2

A: Use the partial fraction method to solve the question Find the value of A and B

Q: Determiner the nature of a respond of the transfer function below: G(s) = (100)/ (s2 + 15s + 100

A: The nature of response of the given transfer function needs to be obtained and the same can be…

Q: A system is described by the following differential equation: d³y +3d²y + 5d + y = dy d³x dt ³ dt dt…

A: A system characterized by a differential equation, we need to find the transfer function, .

Q: 2. Determine Vo using: (a) Mesh Analysis; an d(b) Nodal Analysis.

A: For the given circuit the value of the unknown voltage needs to be calculated by using mesh analysis…

Q: Write the following RLL program: It is desired to design the controls for a large, three phase AC…

A: Note: “Since you have posted multiple questions, we will provide the solution only to the first…

Q: Consider the figure shown below. Find the voltage (V) at node 1. V1 10V Qu'e 15 V شمشه O 12 V O 16 V…

Q: Indicate the canonical and standard form of both SOP and POS

A: Given:Solution of a logic function problem as,The complete truth table…

Concept explainers

DC Generator

An electromechanical machine which converts input mechanical energy to respective output electric energy is called a generator.

Question

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: Dc shunt generator

VIEW

Step 2: Dc shunt generator

VIEW

Solution

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

Two dc shunt generators, each with armature resistance of 0.02 ohm and field resistance of 50 ohms run in parallel and supply a total current of 1000 A to the load circuit. If their emf's are 270 V and 265 V, solve the bus bar voltage. Subject:Electrical Machine 1
In the design shown in the figure, the two-stage reducer transmits the motion of the electric motor to the fabric(kumaş) winding system. Find the motor power in Watts depending on what is given. The gear numbers of the gears are z1, z2, z3 and z4; The yield of the 1st and 2nd stages is 0.99 and 0.99, respectively, the yield of each bed = 0.99. Coupling efficiency will be taken as 1. The diameter of the drum is Dt mm, the fabric speed = 2.7 m / sec and the belt is pulled with a force of 1967 N during operation. EXPLANATION: 1-) Pi number will be taken as 3 when necessary. 2-) Decimal numbers with commas and 2 (two) digits after the comma.
Q20) A 1000rpm DC shunt generator is supplying 100 lamps of 60W at 230V, the armature and field resistance are respectively 0.1Ω and 115Ω.Calculate the generated emf. a. 232.809 V b. 222.809 V c. 212.809 V d. 242.809 V
A 230 v series motor is taking 50 A. Resistance of armature and series field wings is 0.2 and 0.1 respectively. calculate the back emf and mechanical power developed
A 230 V series motor is taking 40 A. Resistance of armature and series field windings is 0.32 Ω and 0.1 Ω respectively. Calculate the back emf and the mechanical power developed.
A 600 V series motor takes 120 A and operates at 900 rpm when the load is80 HP. If the effective circuit resistance is 0.20 ohm, calculate the HPoutput of the motor when the current drops to 90 A. assuming that the fluxis reduced by 20 %.
A 220 V shunt generator develops a brake horsepower of 64 HP. If the armature and shunt resistances 0.02 and 55 ohms respectively and the iron and friction losses amount to 1750 W, find the full-load current.
A 400 kW, three-blade wind turbine is designed to deliver power at a wind speed of 15 m/s. The blades have a depth of 14 m, and the rated speed of the turbine is 48 rpm. The air density is 1.226 kg/m3. Calculate (a) area swept out by the turbine (b) wind power available to drive the turbine (c) capacity factor of the turbine
A motor has the following specifications: Motor Armature Supply Voltage = VM = 18 V Motor Armature Resistance = RA = 8.4 Ω Motor back emf proportionality constant = Kb = 42 x 10 ̶ 3 V/rad/s Motor Torque proportionality constant = KT = 42 x 10 ̶ 3 N·m/A The motor with the specifications provided above is coupled directly to a load with the following specifications: Opposing Load Torque = TL = 19 × 10 ̶ 3 N·m Load and Rotor Rotational Inertia = JL = 400 × 10 ̶ 6 kg·m2 Find the following (with the load specified above): a) Initial angular acceleration of the motor shaft-load when the motor is initially powered on b) Steady state angular speed of the motor shaft
Maintenance team has a 3Φ induction motor 400V, 50Hz, 6 pole deltaconnected takes 45 kW with a line current of 75 Amps and runs at a slip of 3%. Ifstator iron loss is 1200 kW, Mechanical Loss is 900 W and resistance between twostator terminals is 0.12 ohms. Determine the torque developed in the shaft in (lb-ft). A=294.7
A DC generator feeds a load consisting of 22 lamps, each lamp capacity 100 W,220 V, calculate the amount of electrical motive force generated if the resistance of the armature is known as 0.2Ω while ignoring the resistance of the field winding.
A 200V d.c. motor develops a shaft torque of 15 Nm at 1200 rev/min. If the efficiency is 80%, determine the current supplied to the motor.