Calculate the efficiency of motor at different loads Calculation :Motor input = VIN PUT × IIN PUT%3DGenerator output = Vout put . TOUTT PUT%3DPR losses in generator = 1,'Ra+ If R,%3DMotor output = generator inputGenerator input = generator output + I R loss in generator + constant loss (Pc-CANeglect the Pc in calculationMotor efficiencyoutputinрutx 100Eb. laMotor torque developed (Tdeveloped)N.m%3D EXP .No (5):-Load of series motorMotor sideItGenerator sideVinput(V) Ainput(A)VemfSpeed(r.p.m) Ish(A) Eg(v)Vout(V)Iout(A)back(V)At noload 901.78518000.32131.51300.0At load1.98417930.25118.51200.390902.27917800.251211200.5902.482.116990.26112.51120.75902.582.016140.231001001902.88214640.26100.4981.1903.28114000.2698941.22450222223

Since you have asked multiple questions in a single request, we will be answering only the first…

EXP .No (5):- Load of serie Motor side Vinput(V)Ainput(A) Speed(r.p.m) Is Vemf At no load 90 back(V) 85 1.7 1800 0. At load 1.9 84 1793 0. 90 90 0. 0. 0. 2.2 79 1780 90 2.4 82.1 1699 90 2.5 82.0 1614 90 2.8 82 1464 0. 90 3.2 81 1400 0.

EXP .No (5):- Load of serie Motor side Vinput(V)Ainput(A) Speed(r.p.m) Is Vemf At no load 90 back(V) 85 1.7 1800 0. At load 1.9 84 1793 0. 90 90 0. 0. 0. 2.2 79 1780 90 2.4 82.1 1699 90 2.5 82.0 1614 90 2.8 82 1464 0. 90 3.2 81 1400 0.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter12: Power System Controls

Section: Chapter Questions

Problem 12.6P

See similar textbooks

Related questions

Q: mid 11615 This course Clear my choice In the network shown, the power absorbed by the 4-0 resistor…

Q: vee 1452 + )43V No 186V 1.614 + What is Vo I+

A: Find Vo for the given circuit ?

Q: question 1:- Apply Routh Criterion to check the Stability of 5+5+25+25² +35+15=0. 54 Ans. unstable…

A: We need to check whether the given system is stable or not .

Q: 3- In a PWM, what should be the duty cycle to get a voltage output of 4.5 V? 4- Given the…

A: Solve the first question, unless the student has asked for a specific question to be solved, subject…

Q: EVA 2300/250V 86.6% lagging pf en Circuit Test: 250V, 1A, 80W ort Circuit Test: 20V, 12A, 100W…

A: In this we have given open circut test and short circuit test readings...We have to find out…

Q: 20LVA were obtained 2. The 2u00: 2uov folloming date trons former teste d at 60 Hz single -phose…

Q: santralinin verimliliği yaklaşık yüzde 90 The efficiency of today's hydroelectric plant is about 90…

A: Need to find efficiency of water turbine

Q: In a step-down chopper,Vo/Vs ratio is equal to(D=duty cycle) a. 1/1-D b. D c. D/1-D d. 1-D

A: The correct option is b V0Vs=D.

Q: A power station has a load cycle as under: 260 Mw for 6 hours; 200 mw for 8 hours; 160 Mw for 4…

Q: ck Submit to complete this assessment Question 6 of 6 Save Answer wer input to a 306V, 3. 50 Hz…

Q: Three generators have the following characteristics: Generator A: VNL = 500 V; VFL= 440 V at a…

Q: Two shunt generators running parallel deliver a total current of 3,600 A. Each machine has a field…

A: In the question, Two shunt generators running parallel deliver a total current of 3,600 A. Each…

Q: Zo B = 70 ro = 60 kN 24 V 3.3 kM 2.2 kN 12 V 27 kM 68 kN +Z;

Q: 5. The following figures give the O.C.C. of d.c. Shunt generator driven at a constant speed of 700…

A: The following table is shown below: The graph is shown below:

Q: 12 - Which of the following power plant is based on wave energy? a. Off Shore System b. All of…

A: Off shore system and on shore system are based on wind energy.

Q: A D.C. shunt motoro is a 200 V D.C. supply- Conneded to resistance of 0.2r and at 450 revmin.…

A: In the dc shunt motor Find the change in the flux and torque if the armature current and speed…

Q: 2ov Determine the current supplied by each battery in the circuit shown in .fi 5√ w 42 w 32 5v 222…

Q: A d.c. shunt motor runs at a speed of 1000 r.p.m. on no load taking a current of 6 A from the…

Q: Q: Calculate the efficiency of the dic motor for each step then plot the set of curves (efficiency)…

A: given data:- n%=PoutPinx100%Pin=VaIaPout=Tω ; ω=2πN60

Q: Calculeube the Power Druh fron the Sounce BCaleulaube the power facbon Coreeb the Pouen Jadbon

Q: 32 reele- 10 Z0° 32 1260

A: Given circuit shown R=3,X=2

Q: Q3 Tulo degenenors Aand B Ras th fallowing charackcistics: Gai nted valtagaSo Volt ; vatud currente…

A: RL=load resistance Generator A: rated voltage =150 V, rated current=30 A, armature resistance=0.4Ω…

Q: A 440-V, DC shunt motor has Ra=0.8 0 and Rf=100 02. the voltage Ea when giving an output power of…

A: Given: A DC shunt motor has Ra=0.8 ΩRf=100 ΩP0=7.46 kWη=85%

Q: 3 phase IM develops 4 kw at 11/0 rpm. It has a 6 pole, 60 Hz. Neglect the friction and windage…

A: we have given ; Ns=1170rpmPm=mechnical power developed=4000WP=6f=60HzPstator losses=250Wstator input…

Q: In the figure shown, the voltage and current waveforms of a motor are plotted. What is the phase…

A: Given, The time period of waveform T=0.025 sec The time shift between voltage and current waveform…

Q: For any feasible combination of generators, the load will be dispatched based on a. Heat rate b.…

A: For a power system that contains number of generator , ' Equal incremental cost rule ' determines…

Q: Pascal = (0.01 bar, 0.001 bar,0.0001 bar, 10 100.000 bar)and T= 500 rankine what is the value in…

Q: A13 The back e.m.fof a d.c. motor is V-la Ra. (TRUE/FALSE)

A: In this question we need to verify the given statement is true or false.

Q: Q.178- using Kirchhoff's Law, Calculate I,, Iz,Ig,R anss [l.5A, 1.5A, G.5A Big Bue g loo2, 216V] 10…

Q: I currents. +3 V +3 V 5 kn 10 kM Z D Z D. IZ D, SZ D.

A: As per Bartleby policy we can answer only one part at a time so i am solving a part, repost for…

Q: 200 step-per-rotation stepper motor is attached to a table with a five-pitch lead screw. How many…

Q: fll 1/2loa Load Noload 4 Load loa Zoad speed 1800 (rem) |ヲ12 163) 1Y00 out pat Voltage 115V/ llov…

Q: 3.5 Evaluation 1. Explain why the generated voltage decreases when the load current increases.

A: As per Bartleby guidelines we are allowed to solve only one question,please ask the rest again.

Q: 4. Prove the following entailment in SD. (Hint: The order in which vE and ¬I are done often matters)…

A: The link between statements that hold true when one statement logically follows from one or more…

Q: Solve the problem in a short bond paper. A Generator supplies power to a 12-kW load 183 meters away…

A: The given diagram is shown below:

Q: Is the following system BIBO stable? Is it internally stable? why? Го 6 9 B = [].C= 10 A= 10 - [0 1…

Q: The total copper loss in an induction machine is found to be 1.5KW if the stator resistance is 0.6…

A: According to Bartleby question answer rules I have to solve only one question.so I solve first one…

Q: E) power factor of the motor? a) improves b) get poorer c) remains the same d) none of the above

A: One individual question is to be answered. E) In a three phase induction motor, when there is no…

Q: The total copper loss in an induction machine is found to be 2.5KW if the stator resistance is 0.5…

A: Total copper losses =2.5kW Stator resistance R= 0.5 ohm Find the stator current

Q: Q3// A30 KW , 300 V dc shunt generator has armature and field resistance of 0.05 ohm and 100 ohm…

A: Consider the DC shunt generator,

Q: Rotor currint at standstill (stant ) €2 Ie = Note : Here, value of R (rheostat) is not given in the…

A: You posted the question, in which you asked to calculate rotor current and power factor at start.…

Q: 5.) The exact full load current of 208 V, 3Ø, 50 hp SCIM motor with an 80 % power factor is A.…

Q: Question 8 A shunt generator running at 1000 r.p.m. has generated e.m.f. as 300 V. If the speed…

Q: If the voltage Vs = 800 Volts, then the current flowing in the primary winding I, is: %3D 1-8 j20n…

A: The transformer is used for stepping the voltage up or down in the secondary side. The…

Q: 1. The following questions refer to the circuit shown below. a) What do the areas of the circuit…

A: Here in the given circuit which is labeled as 'A' is an optocoupler circuit consisting of a light…

Q: Open Q1: A 4-pole, 208 V, 3¢ R, =0.4 2 R' = 0.14 Rotor losses are 360 a motor speed of 17 a. the…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Two compound generators A and B, fitted with an equalizing bar supply a total current of 500A. the…

A: In this question, Two generator are connected in parallel through a equalizing bar. Find the…

Q: %23 IoA 1172 =-399n IAB 1172 wwww IBC 202-90°v -J992 20430° A ICA -j99n IcC a) Find the load current…

A: Find the IBC load current.b) Give the Vca line voltage.c) Calculate the total complex power on the…

Concept explainers

Speed control of motor

Speed control by DC motor-speed controller is required to realize variable speed drive. Whenever a motor drives a particular load, it is called drive, and variable speed drive refers to a load requiring variable speed. All this is obtained by a DC motor speed controller.

Question

Calculate the efficiency of motor at different loads

Calculation :
Motor input = VIN PUT × IIN PUT
%3D
Generator output = Vout put . TOUTT PUT
%3D
PR losses in generator = 1,'Ra+ If R,
%3D
Motor output = generator input
Generator input = generator output + I R loss in generator + constant loss (Pc-
CA
Neglect the Pc in calculation
Motor efficiency
output
inрut
x 100
Eb. la
Motor torque developed (Tdeveloped)
N.m
%3D

EXP .No (5):-
Load of series motor
Motor side
It
Generator side
Vinput(V) Ainput(A)
Vemf
Speed(r.p.m) Ish(A) Eg(v)
Vout(V)
Iout(A)
back(V)
At no
load 90
1.7
85
1800
0.32
131.5
130
0.0
At load
1.9
84
1793
0.25
118.5
120
0.3
90
90
2.2
79
1780
0.25
121
120
0.5
90
2.4
82.1
1699
0.26
112.5
112
0.75
90
2.5
82.0
1614
0.23
100
100
1
90
2.8
82
1464
0.26
100.4
98
1.1
90
3.2
81
1400
0.26
98
94
1.2
24502
22223

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

Step 2

Step 3

Step 4

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

Find the control ratio, C(s)/R(s) for the system given below using Mason’s Rule.
Question: Which of the following is the closest common platform relative of the Volvo VE-D16 engine? a. Volvo VE-D11 b. Volvo VE-D13 c. Mack Trucks MP-8 d. Mack Trucks MP-10
Refer here for the specifications of the D400. a) What power output should you be able to supply from the 24V D400 at 15.4 m/s? b) If the wind drops to 2 m/s, what will the output power be? c) According to the performance graph what is the maximum power you can obtain from the 24V D400? There is a possibility of installing the turbine on top of a 20m high mast instead. Assuming that Zo=0.012, what would you expect the wind speed to be at that height? Use wind shear formula and assume Vref = 7.5 m/s at a height of Zref =10 m.
Back emf of a DC Drive is directly proportional to speed Select one: True False
Two shunt generators A and B operate in parallel and their load characteristic s may be taken as straight lines. The voltage of A falls from 240 V at no - load to 220 V at 200 A, while that of B falls from 245 V at no - load to 220 V at 150 A. Determine the current which each machine supplies to a common load of 300 A and the bus - bar voltage at this load.
A d.c. shunt machine has armature and field resistances of 0.025 Ω and 80 Ω respectively. When connected to constant 400-V bus-bars and driven as a generator at 450 r.p.m., it delivers 120 kW. Calculate its speed when running as a motor and absorbing 120 kW from the same bus-bars
Voltage drop due to IaRa is at right angle to Ia in synchronous machine working at lagging power factor. Select one: True False
Find the synchronous impedance and reactance of an alternator in which a given field current produces an amature current of 200A on short-circuit and generated emf of 50V on an open-circuit. T he armature resistance is 0.1 ohm. To what induced voltage must the alternator be excited if it is to deliver a load of 100 A at pf of lagging., with a ternminal voltage of 200V.
1-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)
Two shunt generators A and B operates in parallel and their load characteristicsmay be taken us straight lines. The voltage of the generator A falls from 240 V atno-load to 220 V at 200 A while that of B falls from 245 V at no load to 220 V at150 A. Determine the current which each machine supplies to a common load of300 A and the bus-bar voltage at this load.
N K © M =] v : @& docs.google.com/forms/d/¢ 2 Add file Q 1/ B) What is the work of Commutator . * &2, Add file Q 2) The following information is given for a 300-kW, 600-V, long-shunt compound generator : Shunt field resistance = 75 Q, armature resistance including brush resistance = 0.03 Q, commutating field winding resistance = 0.011Q, series field resistance = 0.012 Q, diverter resistance = 0.036 Q. When the machine is delivering full load, calculate the voltage and power generated by the armature * 2 Add file Q 3) A four pole aenerator havina - >
4. Two shunt generators operating in parallel have each an armature resistance of 0.02 . The combined external load current is 2500 A. If the generated e.m.fs. of the machines are 560 V and 550 V respectively, calculate the bus-bar voltage and output in kW of each machine. Subject: Electrical Machine 1