A 3 kVA motor operates from a 240 V supply at 50 Hz and has a power factor of 0.6. Determine the active power Select one: 1800 W Non of the Answers 1900 W 2000 W
Q: a) Determine, by successive conversions between Thevenin and Norton equivalent networks, a Thevenin…
A:
Q: Two wattmeter’s indicate 6 kW and 5kW respectively when connected to measure the input power to a 3…
A: Given data: 2 Watt meter's readings as: W1=6 kW, W2=-5 kW (reverse switch) (a) Total input power,…
Q: If the full load copper loss of transformer is 349 W, then the copper loss at half load is given by…
A: The term load in an electrical machine implies current. And we know that copper loss is…
Q: An electric kettle is required to raise the temperature of 2 kg of water from 20ºC to 100ºC in 15…
A: given datam=2 kgT1=20°C T2=100°CTime=15 min. (t)=15*60=900 secvoltage (v)=249 voltsefficiency…
Q: If the full load copper loss of transformer is 310 W, then the copper loss at 75% of load is given…
A: Given data :- Full load copper loss = 310 w Find :- At 75% = ?
Q: Calculate the EER rating of a 20 ton (240000 Btu) air conditioning unit with an average electrical…
A: given that , BTU=240000 electric load =30kW =30000W we know that , EER(energy…
Q: A motor running 1800rpm transmits 10KW of power through a 25mm diameter shaft 1.2m long. What is the…
A:
Q: In a 20KVA, 2000 / 200 V power transformer, the iron and full load copper losses are 360W and 425W…
A: Answer:
Q: The open circuit voltage of a transformer is 242 V and its % regulation is 3 %, then the value of…
A:
Q: Large transformers, when used for some time, become very hot and are cooled by circulating oil. The…
A: (C) both the heating effect of current and hysteresis loss Hysteresis losses result each time the…
Q: 4. The armature of a 6-pole separately excited dc generator is triplex wave wound with 534…
A:
Q: In a 15KVA, 2000/ 200 V power transformer, the iron and full load copper losses are 360W and 400W…
A: Solution is given below.
Q: A 228 V / 111 V single-phase transformer has a core loss of 110 W and the no-load current is 0.7 A.…
A: Answer.4 Given Data V1=228V V2=111V Core loss power P1=110W No load current, I0=0.7A Core loss…
Q: Discuss the importance of using (1 ?electrical transformers cuss the most important types of (2…
A:
Q: A 33 kW, 225 V DC series motor is being supplied by a feeder with total resistance of 0.03 ohms and…
A:
Q: The name plate data of three-phase induction motor has the following data: 25 H.P., P= 4, 50 Hz, Y ,…
A: The given values are:…
Q: A coil has an inlet temperature of 70°F and outlet of 80°F. If the mean temperature of the coil is…
A:
Q: If the core loss of single phase transformer at full load is 294 W, then the core loss at 25% of…
A: Core loss is always constant does not depend on load condition , it is always constant at every load…
Q: 6. A single-phase, 50 Hz transformer has 40 primary turns and 520 secondary turns. The cross-…
A: Given : For a single phase transformer frequency f = 50 HZ…
Q: Question No. 10 Electric supply of a house is through a 15 A fuse. When a 2000 W heater is used in…
A: Answer: The number of 100 W bulbs that can be used simultaneously are 13. Therefore, the correct…
Q: A generating unit of 10 MW capacity supplies the following loads: Domestic consumers with a maximum…
A:
Q: R20 ww For e ned 1-POWER SUPPLY E-20V a-CURRENT ACROSS RESISTANCE R2 VOLTAGE CROSS RESISTANCE RI…
A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…
Q: An ice plant produces 10 tons of ice per day at 0°C using water at room temperature of 33°C.…
A: The COP refers to the coefficient of performance is defined as the ratio of heat extracted to the…
Q: In a 15KVA, 2000 / 200 V power transformer, the iron and full load copper losses are 370W and 415W…
A: Given Data Power output = 15KVA Ans(i) At full load 0.8 PF Copper loss = 415 w Core losses = 370W…
Q: In a given DC motor, the output power is 20 HP, and the copper losses are 1.1 KW. If the motor is…
A:
Q: In a industry, a balanced 3 phase star connected load draws power from a 400 V supply. Two…
A: solved;
Q: We have a device that contains two shafts and a motor with a power of 15kW and a speed of 1500rpm is…
A: Given: The power available at the motor, P1 = 15 kW The speed of the shaft, N1 = 1500 rpm The power…
Q: In the following figure, If Q=0.00594 m/s, what is the output power delivered by the 100% efficient…
A: Consider motor as control volume. Assume fluid flowing is water. It's density is, ρ=1000 kg/m3 So,…
Q: Overall diversity factor may be taken as 1.4. Determine (a) the maximum demand on the system, (b)…
A:
Q: In a 20KVA, 2000 / 200 V power transformer, the iron and full load copper losses are 355W and 405W…
A:
Q: 4) Find the applied Voltage necessary to develop the Current specified in each circuit? a) Find…
A:
Q: Following is a GLHP installed in a gymnasium. The gym needs cooling and the swimming pool water…
A: Write the given values using suitable variables. Here Q2 signifies heat absorbed from the system,…
Q: Q22 111 Poor power factor results in: a) Higher energy losses b) Higher load current c) Both a & b…
A: Option ( C ) is correct Both a & b
Q: What are the application of thermodynamics in electrical engineering?
A: thermodynamics:- it is study of energy conversion between mechanical work and heat in electrical…
Q: Choice the correct answer of the following statements: 1. The power transmitted of two pulleys…
A: Solution.jpg
Q: 5. A 25 MVA turbo-alternator is working on full load at a power factor of 0-8 and efficiency of 97%.…
A:
Q: The two popular operating voltages for residences are_________ V and _________ V.
A: Residential electric service enters the building in two forms, 120 volts and 240 volts. These are…
Q: If the core loss of single phase transformer at full load is 134 W, then the core loss at 50% of…
A: Given Loss at full load = 134 W
Q: The input voltage to a full-wave rectifier employing a center-tapped step- down transformer and two…
A: This question is related to the full-wave rectifier. As we know, the full-wave rectifier converts…
Q: The maximum temperature attain from Cylindrical Parabolic trough Concentrator collectors is: Tmax =…
A: The maximum Temperature attained by cylindrical parabolic through collector is 200-400°C
Step by step
Solved in 2 steps with 1 images
- Q5/ Determine the Nodal Voltage for the figure 13 V₁ R3 ww 20 z 4A www 12 Ry 202 R₂602 ZAThe input power to a 3-phase load is measured as 19kW. If the line voltage and power factor of the load are 430 V and 0.6, then the value of line current isThe input power to a 3-phase load is measured as 6700 watts. If the line voltage and line current to the load are 430 V and 18 A respectively. The power factor of the System is,
- al Three coils each having resistance of 29 N are connected in star across 422 V, 50 Hz supply. Then the total power consumed is O 211.77 W O 3545.51 W O 730.95 W O 6140.83 WQUESTION 8 Consider the equations of motion of an armature controlled DC motor given by Jw(t)+bw (t) Ki(t) = -Tfriction - Tload (t) di (t) + Ri (t) + Kw (t) = Vin (t), dt where vin(t) is the input voltage and Tload(t) is the input load torque. The outputs are the armature current i(t) and the motor speed w(t). The steady-state response of motors are specified by nominal voltage, stall torque, stall current, no load speed, and no load current. At steady-state operation, the motor equations satisfy bo) -Ki =-T -T. fric load Ri +Kov_- 55 55 The stall torque is the load torque required stead-state speed of the motor is zero. The stall current is the armature current when the motor speed is zero. The no load speed is the speed of motor when the load torque is zero. The no load current is the current when the load torque is zero. What is stall torque for this motor in N-m? Keep 3 significant figures, and do not include units. Use Scientific notation. The constants are given below. Nominal…) Two 220-V. d.c. generators, each having linear external characteristics, operate in parallel One machine while the other has a has a terminal voltage of 270 V on no-load and 220 V at a load current voltage of 280 V at no-load and 220 V at 50 A Calculate the output cum of each machine and the bus bar voltage when the total load is 60 A. What is the kW output of each machine under this condition
- A 10kW, 120V-DC series generator has an armature resistance of 0.1 ohms and a series field resistance of 0.05 ohms. Assuming that it is delivering rated current at rated speed, find the a) armature current and b) induced emf. (Write only the value without the unit) la = Blank 1 A Ea = Blank 2 V (Round-off to 2 decimal places)A three-phase squirrel-cage motor is connected to a 60-Hz line. The full-load speed is 870 RPM. How many poles per phase does the stator have?An inductor has an inductance of 0.025 H and a wire resistance of 3 Ω. How long will it take the current to reach its full Ohm’s law value?
- The open-circuit voltage of 246 V and the full load secondary voltage of 220 V, then the % regulation of a transformer isActivity 5: By applying Kirchhoff's Voltage Law to a series RL circuit, we obtain the differential equation: di 4t+8 i = 1 , t>0 ´dt where i(t) = electrical current in Amperes, and t = time in seconds. 5-A) Use the integrating factor technique to find the expression of the current (general solution)An 8 pole, lap connected armature has 500 conductors and its generated e.m.f is 120V. If the flux per pole is 20 mWb, then the speed of machine is,