19. An ammeter, a voltmeter, and a wattmeter were installed in an ac circuit and read 15 Arms, 115 Vms, and 1,500 W, respectively. The power factor of the circuit is most nearly: O A. ов. -0.87 -0.5 0.5 O D. 0.87

Q: Power factor is 0.707 when three-phase inductive 250 kW power is drawn from 440 V transmission line.…

A: According to the question we have to find the current and power factor drawn from the line.

Q: 2. A three-phase alternator has a rating of 5000 kVA at 13.2 kV. Calculate the full-load line…

A: Given:  S=5000 KvA V=13.2 KV we know that  S=3×V×I I= Load Current

Q: Calculate the line current required for a 30-kW three-phase motor having a power factor of 0.85…

A: Given: P=30 kWcosθ=0.85VL=440 V

Q: For the circuit shown, find the value of coupling coefficient "k", when the total consumed power is…

A:

Q: Find the value of ZL for maximum average power transfer to the load. -j2 Ω 2Ω 20 2 Ω 12/6°v (+ 4ΩΣ…

A:

Q: A 200V source is connected to the parallel loads: Load-1 is 20 ohm; Load-2 is 10 +j20 ohm Calculate…

A:

Q: 4.Calculate the real power taken by each impedance that the conservation of nower holds

A: Let us assume  Z1→=4+j3Ω,Z2→=120+j90Ω Given Vs rms=465∠0°V

Q: Calculate the line current required for a 30-kW three-phase motor having a power factor of 0.85…

A:

Q: The percent impedance of a 115 kV transmission line is (3.8 + j 15.1) % at 100 MVA base. What is its…

A: Basic problem on power system analysis.. Look below for the solution..

Q: 1. A hydroelectric station generate power from a reservoir of capacity 4 x 10° m at a head of 50 m…

A:

Q: 5. A standby 3-phase ac generator has the following balanced loads: 50 kVA at 0.8 pf lagging and 20…

A: First calculate active power and reactive power for each load and than find total active power and…

Q: Question 1 A 220 -v three phase motor takes 21.437 W at 0.71 lagging power factor. what us the line…

A: Given a 3-phase motor with, Power rating, P = 21.437 W Voltage, VL=220 V rms Power factor, cosφ=0.71…

Q: 1. Two properly connected wattmeters are used to measure the power drawn by a 440 V squirrel-cage…

A: As per the guidelines given, We can only provide the solution of the first question in multiple…

Q: 452 2. 34j2 Zea Find the equivalent impedance

A:

Q: A power generating station is required to cater to a 3-phase balanced load of 1500 kW at 11 kV, 50…

A: Given data, Load power P=1500 kW=1500×103 W Line voltage VL=11 KV = 11×103 V Frequency f = 50 Hz

Q: 1.12o e: In the following 4-bus power system, if in perunit. Vbus = (pu), find the current of each…

A: The current of each bus bar of the given power plant is

Q: For the circuit shown, calculate power at W1.

A: It is given that:

Q: 2. From the circuit, determine the value of load Z for maximum power transfer and the maximum…

A: The problem can be solved by using thevenin therom.

Q: - The voltage drops across two components when connected in series across an AC supply are vi (t) =…

A: The circuit this is excited the use of alternating supply is referred to as an AC Circuit. The…

Q: A balanced Y-connected load absorbs in total 3 kW at a power factor of 0.6 lagging. If th line…

A: Given, A balanced Y-connected load absorbs, Total power, PL=3 kW Power factor, cosθ=0.6 lagging Line…

Q: a. Find the total number of watts, volt-amperes reactive, and volt-amperes, and the power factor F.…

A:

Q: In analyzing a hydropower site, it is found guibe that the turbines should turn at close to 350…

A: In this question,  If frequency of the rotor is given f= 60Hz We need to find out the number of…

Q: A hydropower station has a gross head of 12.9 meter Head loss in water conductor system is 1.1…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

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

A: The load factor (LF) of a power station is the ratio of average load (AL) on power station to…

Q: 13. The figure below shows part of a power system consisting of a generator, two transformers and a…

A:

Q: A load of 500 kVA operates at 0.6 lagging power factor on 1100V, 50 Hz mains. The power factor of…

A:

Q: A 132MW generator sends power to an industrial load at 132kV, 500A, Unity power factor. Excluding…

A: An alternator/synchronous generator is a type of electrical machine that converts mechanical energy…

Q: A factory take 500kW at 0.75 pf lagging from a constant voltage AC supply. A synchronous condenser…

A:

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

A:

Q: QI: A synchronous motor having a power consumption of 50 kW is connected in parallel with a load of…

A: In this question we have given parallel connected load and combined power factor....We have to find…

Q: a common utility’s tariff practice to penalize industrial consumers whose power factor falls…

A: Power factor is the ratio of real power to the apparent power.  It should be not too less as it…

Q: A balanced Y-connected load absorbs in total 3 kW at a power factor of 0.6 lagging. If the line…

A: Given: A balance Y-connected load has PL=3 kWcosθ=0.6VL=500 V

Q: Exercise 2 (AC Circuit – Mesh Analysis) 82 j42 30430 V Determine I,

A:

Q: 39. The impedance of a transmission line is 30 ohm. What is the per unit impedance of 115 kv and 100…

A: It is given that: Actual Impedance=Zactual=30 ΩActual Voltage=V=115 KV=115×103 VBase Power=Sb=100…

Q: Find the magnitude of the impedance for the network, and the magnitude and phase of the supply…

A: In this question , we will find impedance of network...And supply current...

Q: What is the phase sequence of a three-phase alternator connected in Y for which e,. moreover find…

A: Given, VAN=7200∠-130 VVBN=7200∠110 V

Q: 19. Calculate the average power supplied by the source as shown below. + 2Ω www 60 V 3Ω 8Ω 0000 w 4Ω…

A:

Q: Consider the power system shown in the figure. Calculate: a) The total complex power. b) The power…

A:

Q: For reasons associated with economy, transmission of electric power is done by 3- phase system.…

A: Transmission of Electric power is done by 3 phase system

Q: A 410V, 3-phase star connected alternator supplies a delta-connected load, each phase of which has a…

A:

Q: A- For the network shown, calculate the total power delivered to the circuit. 202 20 2 -j405. 402

A:

Q: A 39 kW delta-connected motor with a lagging power factor of 0,85 is supplied by a three-phase…

A: In a three-phase circuit, there are two types of connections : i) Star Connection :  A star…

Q: Example 9.6 For the power system below, draw the zero sequence networks. Q W △ Y글 Y M P R S △ Y글

A: The solution is given below

Q: power factor on 1100 V, 50 Hz mains.  The power factor of the system is improved from 0.6 lagging to…

A:

Q: The input power to a 3-phase a.c. motor is measured as 5 kW. If the voltage and current to the motor…

A:

Q: Find (1) The complex power of the other load and its po (2) The line current supplied by the source.

A:

Q: Find the KVAR drawn from a 3-phase generator when it is delivering 25 A at 240 V to a motor with…

A:

Q: X-Majority of our home appliances work on a 110-V line. Y- AC is called alternating current because…

A: Our home appliance work on 220-V line. And  An electric current that reverses its direction many…

Q: A hydropower station has a gross head of 14.4 meter Head loss in water conductor system is 0.5…

A: According to Bartleby guidelines we are supposed to solve only 3 subparts at a time kindly repost…

Q: A 3125 kVA turbogenerator operates with 2,500 kW and 0.8 inductive power factor. Another 330 kW load…

A: The complex power in an AC system is defined as the product of rms value of applied voltage and…