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

Q: Correct the power factor for a motor connected in series with a 120V RMS 60Hz power supply. The…

A: The power demand remains constant in a given circuit. Small power factors will cause more and more…

Q: A 4 pole generator rotates through 120 mechanical degrees in 1.65ms. Find the frequency of the…

A: Given  θ=120°(mech). The angle in electrical degrees is converted as θe=P2*θ=42*120°=240°.…

Q: An electric motor with a power factor less than 1 and lagging has a reactive power component a)…

A: Power factor<1 Lagging power factor

Q: QUESTION 5 Correct the power factor for a motor connected in series with a 120V RMS 60HZ power…

A: This question belongs to network theory . It is based on the concept of power factor correction for…

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 total stator losses of a three-phase asynchronous motor with an input power of 60 kW are one…

A: In the question The total stator losses of a three-phase asynchronous motor = 1kW input power =60 kW…

Q: current and voltage outputs of an operating ac generator have peak values of 2.5 A and 16 V,…

A: In this question we will find average power output and effective resistance....

Q: In a 208-V, three-phase motor load, the current drawn by the motor is 25 A, and the PF is 0.87. What…

A:

Q: When 40V DC voltage is applied to a single-phase AC motor, it draws 1A current. When 200v-50Hz AC is…

A:

Q: A four pole AC motor operates on a three-phase, 25 Hz, 208 V supply. What is thesynchronous speed?

A:

Q: A 36- pole alternator is operated at 200 rpm. What frequency is generated?

A: Given data: Pole, P = 36. Speed, Ns = 200 rpm.

Q: A three-phase supply is generated, when three coils are placed apart and the whole rotated in a…

A: Space angle between the windings for n phase supply is 360n where n is the no. of phases

Q: A non-liner load is connected to a 220 V, 50 Hz power supply. Determine the harmonic order of the…

A: When the supply voltage is balanced then it does not contain harmonics. when a linear load is…

Q: 5. An alternator has 16 poles. At what speed must it be driven to develop: 40 cycles a. b. 25 cycles

A:

Q: two 3phase alternators in parallel are both operating at the same frequency. What is theremedy if…

A: Parallel operation of Alternator AC power systems are often interconnected for efficiency, reliable…

Q: If the peak voltage of a 60-Hz AC generator is 250 V. What is the instantaneous voltage after the…

A: Frequency = 60 Hz Peak Voltage Vm = 250 V Angle θ = 105°

Q: when a generator is being driven at 1200rpm, the generated emf is 230V. What is the generated emf if…

A: Given,  Speed of the generator (N) = 1200rpm Generated emf (E1) = 230V Let the initial field flux be…

Q: a 3phase 50hz, two poles star connected tutbo alternator has 54 slots with 4 conductor per slot the…

A: Step 1:Step 2:

Q: A voltmeter gives 120 oscillations per minute when connected to the rotor of an induction motor.…

A: Given that voltmeter is connected to rotor of induction motor and gives 120 oscillations per minute.…

Q: The instantaneous current in an ac circuit is given by i = 50 sin ot 7 The current becomes 45 mA at…

A:

Q: Needit ASAP

A: Given that Frequency = 60 Hz Peak Voltage Vm = 250 V Angle θ = 105° We have to determine the…

Q: A 240 V single-phase AC supply is fed to a load resistor of 100 through a thyristor. If the…

A: We need to find out the power consumed by load for given rectifier .

Q: What will be the frequency (cycles per second) of AC voltage of a 10 pole AC generator which rotates…

A: Given a AC generator with, Total number of poles, P = 10. Synchronous speed, Ns = 1200 rpm.

Q: If the voltage is 400v its 3 phase its frequency is 50hz it has 4 poles per phase its running speed…

A: Step 1:

Q: If the flux of the DC motor is decreases then the Flux decreases O Supply voltgae increases O Line…

A: Last option is correct. The explanation is provided below.

Q: What is the phase sequence of the voltages induced in the three coils of an alternator shown in the…

A: From the given figure, the phases/windings are displaced by the 120o. Assuming the windings are…

Q: The current , power factor and input power to a 3-phase ac motor is 16.03A , 0.48 and 6KW. Calculate…

A: The active power consumed by a 3∅ AC motor (P) is given by: Where, The line voltage supplied to the…

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: An AC motor takes 10 A when connected across a 240 V, 60 Hz source. Determine: the power factor of…

A:

Q: single-phase AC

A: Solution of this question deals with concepts of 1phase AC motor & concept of  power factor,…

Q: Show the output waveform for the network shown in figure 11, if the peak value of ac input is 15V.…

A: Given circuit, Vi= 15 V (peak voltage)

Q: A generator produces 80 cycles in 2 seconds, its frequency is ?

A: it is asked to determine the frequency of given generator

Q: The instantaneous emf from a 400-hz aircraft generator is 95 V when t = 1msec. What is the…

A: In this question we need to find a instantaneous voltage at t= 2msec

Q: If the slip of a 2 pole motor is 0.08 the rotor speed is: Answer to the nearest whole number

A:

Q: A heater is rated as 240 V, 50 Hz A.C. The value 240 V refers to Average Value Instantaneous Value…

A: Given , Heater rated as 240V, 50Hz AC

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: To achieve maximum output power from an alternator load angle is shifted till critical angle. The…

A: The load angle is moved till critical angle to get maximum output power from alternator. Then the…

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.