Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
A 480-V, 60 Hz, 400-hp 0.8-PF-leading eight-pole Δ-connected synchronous motor has a synchronous reactance of 1.0Ω and negligible armature resistance. Ignore its friction, windage, and core losses for the purposes of this problem.
(a) If this motor is initially supplying 400 hp at 0.8 PF lagging, what are the magnitudes and angles of E A and I A ?
(b) How much torque is this motor producing? What is the torque angle δ? How near is this value to the maximum possible induced torque of the motor for this field current setting?
(c) If |EA| is increased by 15 percent, what is the new magnitude of the armature current? What is the motor's new power factor?
(d) Calculate and plot the motor's V-curve for this load condition.
transfer function: T(s)=1/(0.1s+1) with all initail conditions at 0 a) if the input is 1.5sin(2t)*u(t) find the steady state value of the output b) after the input is applied, approximately how long will it take for the steady state value you found i..
Determine formulas in closed form for the marginal probability distribution function of X for all x, and sketch a graph of this function over the range -1 ≤ x ≤ 2.
Design a second-order band-pass IIR filter with center frequency of 450 Hz when the sampling frequency is 2,000 Hz. In order to ensure the filter stability, set the poles at 0.96 radial distant from the origin
a cost to produce, P, of $4.00. If we were able to reduce this to $3.55 through greater attention in the design, and if the cost to improve the design (in NRE) is $35,000, how many units must we sell to recover the increased design cost.
cathodes tied to 10v and ground respectively. The voltage at the anodes is 0.1v. The diodes conduct 1mA at 0.7v.find by what factor the reverse leakage current of the diodes exceed Is.
Metal sphere 1 has a positive charge of 8.0 nC. Metal sphere 2, which is three times the diameter of sphere 1, is initially uncharged. The spheres are then connected together by a long, thin metal wire. What are the final charges on each sphere
Air is contained in a well-insulated piston-cylinder assembly with a paddle wheel connected to an external electric motor. Initially, the volume of the air in the cylinder is 0.02 m3, the pressure is 1.5 bar, and the temperature is 400K. The elect..
certain digital communication schemes use redundancy in the form of an error control code to improve the reliability
A single-phase overhead transmission line consists of two solid aluminum conductors having a radius of 2.5 cm, with a spacing 3.6m between centers. a)Determine the total line inductance in mH/m.
1)how would two 50μF capacitors be connected to provide atotal capacitance 100μF. 2) Determine the total capacitance and maximum voltage rating for two 220μF, 300-V capacitors connected in series.
Laplace transforms enable interpretation and manipulation of different signals by viewing these signals as either time domain signals/pulse or else frequency domain representations
A power station has two 60 MW units each running for 7000hours a year and one 30MW unit running for 1500 hours a year. The energy produce is 700 x106 Kwh per year,Calculate; 1 plant load factor 2 plant use factor
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd