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Question:
A consumer has an average demand of 400 kW at a p.f. of 0.8 lagging and annual load factor of 50%. The tariff is Rs 50 per kVA of maximum demand per annum plus 5 paise per kWh. If the power factor is improved to 0.95 lagging by installing phase advancing equipment, calculate :(i) the capacity of the phase advancing equipment (ii) the annual saving effected
The phase advancing equipment costs Rs 100 per kVAR and the annual interest and depreciation together amount to 10%.
How much power (in watts) is transferred to or from the inductor when the time is 1 ms? The current flowing through the inductor is given by 5e^-200t The inductance is 107 mH
Calculate the total number of bits transferred if 100 pages of ASCII data are sent using asynchronous serial data transfer and write an Assembly program to receive 10 bytes of data serially and send them to PORTC
Coils are available which are rated at 4 volts and 5 amps. For the same number of coils to be used for both machines determine the type of armature winding for both machines, number of coils for both machines and kW rating of both.
The Maxwell-Boltzmann distribution is often used to approximate the Fermi- Dirac distribution function. For what range of (E-Ef)/kT is the Maxwell-Boltzmann approximation accurate to within 10%
How to Calculate the Value of Resistor for different types of LED's Circuits ?
A 15-kVA, 8000/230-V distribution transformer has an impedance referred to the primary of 80+j300 ohm. The components of the excitation branch referred to the primary side are Rc= 350k ohm and Xm=70k ohm.
A voltage source Vs = 10 Cos(10^3t - 90 degrees) v, a resistanceFind the max instantaneous power delivered by the source, dissipated by R, and absorbed by L. What are the smallest instants (t > 0) at which these maxima occur.
Which of the following provides the basic attributes and behaviors of a Java window - a title bar at the top of the window and buttons to minimize, maximize, and close the window JLabel JFrame JSwing
The cantilever beam shown consists of a Z shape of 1/4-in. thickness. For the given loading, determine the distribution of the shearing stresses along line A9B9 in the upper horizontal leg of the Z shape.
An induction motor has the following specifications: a 8-polesquirrel cage rotor, operates at 25 hp off of a 220 V line-to-line3-phase service, 60 Hz, 64 amps of line current, and under fullload runs at 830 RPM. The motor draws 20.8 kW at full loa..
design a Melay sequential circuit which investigates an input sequence x and which will produce an output of z=1 whether thetotal number of 0's in the sequence is odd,provided that thesequence 01 has occured at least once.
Determine the speed and number of bits if this signal is to update the output 100 times per signal and be capable of representing the desired output value to better than 0.5 mV.
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