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A 500 V, 3-phase, mesh-connected motor has an excitation emf of 600 V. The motor synchronous impedance is (0.4 + j5) Ω while the windage, friction and iron losses are 1200 Ω. What maximum power output can it deliver? What is the corresponding line current, pf and motor efficiency?
Calculate the carrier frequency and corresponding frequency bandwidth for a microwave communication system operating at 10 cm with a microwave bandwidth of 0.2 mm and for an optical communication system operating at 1.35 micrometers with an optical b..
A balanced three-phase distribution line has an impedance of 1+j8 I per phase. This line is used to supply 3 balanced three-phase loads that are connected in parallel. The 3 loads are L1= 120 kVA at 0.96 leading pf, L2= 180 kVA
When a 0.900kg mass oscillates on an ideal spring, the frequency is 1.49Hz . A)What will the frequency be if 0.300kg are added to the original mass. Try to solve this problem without finding the force constant of the spring.
how do you determine the value of Xl in a parallel resonant circuit, when all youre given is Xc, Rcoil, and the parallel resistance
A current sheet with K =10ax A/m lies in free space in the z =2m plane. A filamentary conductor on the x-axis carries acurrent of 2.5A in the axdirection. Determine the force per unit length on the conductor.
Describe specific engineering and manufacturing process planned to be used in the development of lithium air battery. Potential defects and that cause deviations in the development process. How this process can be used to minimize the amount of waste..
A parallel RC circuit has been connected to a voltage source for all time. R=0.025 Ohms, C= 0.125 farad and v(t)= 10 sin (5t). 1 Derive the current I(t), delivered by the source tothe RC circuit as a function of time.
Discuss how delay is generated (1) using only one register, and (2) using a pair of registers . explain the method to calculate the delay time. Describe the interface connections of a 7 -segment display, which can display alphabets as well as dig..
pulse width modulatorpart-1introduction a pulse width modulation pwm circuit works by varying the duty cycle of the
Presuming that oscillations in wavefunction amplitude lead to oscillations at the same frequency in the charge density, and that the charge density at any point in the structure give rise to radiated electromagnetic radiation at the same frequency
The expression for the torque of an induction motor as a function of its slip may be obtained by application of Thevenin's theorem to the circuit model. Show that the Zth obtained can be shown to be approximately equal to Zth = R1+JX1
Production cost refers to prime cost plus 1. factory, administration and sales overheads 2. factory overheads
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