Find the amount of work the 3-phase motor can do in 3hrs

Q: A 10-poles, 3-phase alternator is coupled to an engine running at 600 r.p.m. It supplies 3- phase…

A: Synchronous speed = (120×frequency)/poles. Slip of motor = (synchronous speed-motor…

Q: The de armature resistance of a wye-connected alternator measured across its two terminals is 0.52.…

A:

Q: The Line Voltage of a star connected three phase alternator is 255 Volts. The Phase Voltage ( Vph )…

A: Given, line voltage of star connected three phase alternator is, VL = 255 V

Q: Q31. If the no load voltage of a certain generator is 210 V and the rated voltage is 200 V, then the…

A:

Q: A 400V, 3-phase Induction motor has output of 20HP and operates at power factor of 0.85 lagging with…

A: Given 3 phase induction motor with Line Voltage(VL)=400 v output power(P0)= 20HP Power factor =0.85…

Q: In the three-phase alternator, explain why the voltage increases less rapidly as the DC current…

A: The explanation is as follows.

Q: The Line Voltage of a star connected three phase alternator is 255 Volts. The Phase Voltage (Vph )…

A: This is good question from machines subject.Look below for solution :-

Q: A 3-phase induction motor draws 50 kW from a 220 V, 50 Hz mains. The rotor emf makes 100…

A: Given, A 3-phase induction motor draws, Electrical input = 50 kW Stator losses = 2 kW Supplied…

Q: The output of the 3-phase, 415 V induction motor is 17 kW and operates at power factor of 0.85…

A:

Q: An alternator is required to generate a line voltage of 450 V on an open circuit. If the machine is…

A: 3 phase star connect alternator  Speed of alternator N= 750rpm Line voltage V=450V Slot per pole per…

Q: A synchronous motor improves the power factor of a load of 200 kW from 0.8 lagging to 0.9 lagging.…

A: WE have been given a load which is carried by the motor and a synchronous motor improves the power…

Q: Which of the following mathematically represents the relationship between the phase and line…

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Q: A 500 kva alternator operates at full load kilovolt ampere output at an efficiency of 95 percent. If…

A:

Q: A 400V, 3-phase Induction motor has input power of 16 KW and operates at power factor of 0.87…

A: Given, Supply voltage (Vs) = 400 volts Total Input power = 16 kW Power factor = 0.87 lagging…

Q: The input power to a three-phase motor was measured by two wattmeter method. The readings were 80 KW…

A: This question is related to two wattmeter method . By using two wattmeter method formula , power…

Q: The input power to a three-phase motor was measured by two wattmeter method. The readings were 9KW…

A: The two wattmeter method is used for calculating the total real power. The power factor angle in two…

Q: The stator of a 3 phase,12 pole Alternator has 124 slots and there are 4 conductors per slot and the…

A:

Q: A 415V, 3-phase Induction motor has output of 30HP and operates at power factor of 0.6 lagging with…

A: The information we have : Output power,  Pout=32 hp=32×746 Watts=22380 Watts Power factor, cosϕ= 0.6…

Q: The power input to a synchronous motor is measured by two wattmeters both of which √3 indicate 50…

A: In this question we need to find a reading of wattmeter when power factor is changed.

Q: The input power to a three-phase motor was measured by two wattmeter method. The readings were 9kW…

A: Given; W1=9 kWW2=4 kW a) The power factor can be given as;…

Q: Can V curve be plotted for an alternator. If yes then what is the difference between V curve of an…

A:

Q: An altemator is required to generate a line voltage of 415 V on an open circuit. If the machine is a…

A: Given,  An 3 phase star connected alternator has, Line to line generated voltage (EL)=415 Volts…

Q: . A 400V, 3-phase Induction motor has output of 20HP and operates at power factor of 0.85 lagging…

A: According to question we have to find the value of each wattmeter reading using given data.

Q: Determine the Total electrical and mechanical degree for an Alternator

A:

Q: The current in a single-phase motor lags 50° behind the voltage. What is the power factor of the…

A: Power factor pf = cosin of angle between voltage and current.

Q: The current, power factor and input power to.a 3-phase ac motor is 8.07A, 0.65 and 5KW. Calculate…

A: Input power is given  P=5 KW=5000 W Current is given i=8.07 A Power factor is given as, cosϕ=0.65

Q: What size 60 degree Celsius conductors are required for a 9000 watt single-phase 120/240 volt…

A: W=V*I  9000= 240* I  I= 9000/240 I= 37.5 amp

Q: If the induction motor absorbs 50 kW, and the stator copper and iron losses amount to 6 kW and 1 kW,…

A: Given an induction motor with, Input power = 50 kW Stepper copper losses = 6 kW Iron losses = 1 kW

Q: The input power to a three-phase motor was measured by two wattmeter method. The readings were 8KW…

A:

Q: A three-phase motor draws a current of 10 A on a 440 V line, and its power factor is 80 percent. a.…

A:

Q: phase reactance is 1.5 pu. (i) Find the mechanical power delivered by the motor, including all…

A: Given data - synchronous machine Voltage V = 415 volt                                      frequency…

Q: The rotor emf of a 3-phase, 6P. 440V, 50Hz induction motor alternates at 4 Hz. What will be the…

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Q: The input power to a three-phase motor was measured by two wattmeter method. The readings were 60 KW…

A:

Q: The power input to an electric motor is 8.8kw when operating normally from 230 volt ac source. If…

A: According to question: The power factor is calculated as…

Q: A single phase AC motor draws 4.5 A from 220 V electricity. Three various power of the motor from…

A: Given Data Single Phase AC motor I = 4.5 A V = 220 V P = 720 W

Q: A 25 KVA alternator has a total loss of 2000 watts when it delivers rated Kilovolt-amperes to a load…

A:

Q: 2. A two-pole three phase 50 Hz Y-connected AC generator has 9 slots per pole and 6 conductors per…

A: To find flux per pole if the voltage on open circuit is 1.1 kV  Given: A 3- phase generator no. of…

Q: A three-phase star-connected alternator working at a speed of 1500 rpm is required to generate a…

A: Given, A three phase star-connected alternator has, Speed(N)=1500 rpm Line voltage (EL)=430 V The…

Q: 400V, 3-phase Induction motor has input power of 16 KW and operates at power factor of 0.87 lagging…

A:

Q: A 4-pole alternator has a load of 150W. What is the speed of an alternator if the frequency is…

A: The solution is given below

Q: An alternator is generating power at 210 V per phase while running at 1600 rpm. If the speed of the…

A: To find the generated voltage per phase at 1200 rpm

Q: A two-pole three phase 50 Hz Y-connected AC generator has 9 slots per pole and 6 condu per slot.…

A: In this question alternator is given....We have to find out flux per pole....

Q: The Line Current of a delta connected three phase alternator is 11 Amperes. Phase Current (Iph) will…

A: In delta connection circuit form a shape of triangle. In this connection starting point of one coil…

Q: What is the apparent power of a single phase motor circuit operating at 120 V and drawing 20 amps if…

A: Given; V=120 VI=20 Acosϕ=85%=0.85

Q: An alternator is connected in star. If the phase voltage is 110 V, the line voltage is *

A: Given: Phase voltage =110 V In the star connection; VL=3VP

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

A:

Q: An alternator has 16 poles. At what speed must it be driven to develop 25cycles

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Q: The maximum instantaneous voltage and current outputs of an alternator are 300 V and 20 A. Find the…

A: Given Data: Vm = 300 V  Im = 20 A Voltage leads current by = 30 degree.

Q: 2. A 60- cycle engine- driven alternator has a speed of 20 rps. How many poles are there in the…

A:

Q: Find the no-load phase and line voltage of a star connected 3-phase 6 pole alternator which runs at…

A: The data given in the question are: 3-ϕ,6pole, 20rps, ϕ=100mWb, Kd=0.96,Kc=0.98, 54slots, double…

Electrical Heating Unit

The conversion of electrical energy to heat energy is known as electric heating. The heating system that converts the electrical energy to heat energy for various application is called electrical heating unit. Electricity is employed as the firing mechanism in electric heating systems, which transforms electric current to heat. Electric heaters have heating elements in the form of electric resistors.