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A small industrial unit draws an average load of 100 A at 0.8 lagging pf from the secondaries of its 2000/200 V, 60 kVA Y/? transformer bank. Find:
(a) The power consumed by the unit in kW,
(b) the total kVA used,
(c) the rated line currents available from the transformer bank,
(d) the rated transformer phase currents of the ?-secondaries,
(e) per cent of rated load on transformers,
(f ) primary line and phase currents, and
(g) the kVA rating of each individual transformer.
An analog signal consists of three sinusoids with frequencies3.1 KHz, 4.82 KHz, and 5.64 KHz. The signal is sampled at asampling rate of 32 KHz producing the Discrete signal x(n). Determine the normalized frequencies in x(n).
The network voltage is 27 kV. The generator operates with an induced voltage, which is twice the rated line-to-neutral voltage. Calculate the power angle if the network receives an inductive reactive power of 50 MVA.
Write a C-program to generate K-map row and column headings for an arbitrary number of row or column input variables, i.e. 4x4 k-map for 2 row and 2 column variables, 16x16 k-map for 4 row and 4 column variables, etc.
The 1 muF capacitor is charged from a 10 V battery via the 1 kOhm resistor. What is the voltage on the capacitor after one second?
A filter has the following transfer function: - Determine the ratio of the noise equivalent bandwidth for this filter to its 3-dB bandwidth.
As the ball rises, it gradually loses kinetic energy as its potential energy increases. At the top of its flight, when its vertical speed goes to zero, all of the kinetic energy has been converted into potential energy.
1. The stress at a point has σx = 13 ksi (T), σy = 18 ksi (T) and τxy = +6 ksi. (3 pts) Determine the principal stresses for the plane stress problem.Calculate the maximum shear stress. Show the results on the diagram below.
Determine the power factor (lagging) of the motor. Find the value of the capacitance C that must be connected across the motor to raise the pf to unity.
Learning Outcomes:3. Analyse and evaluate the performance of analogue circuits and systems.5. Use electronic computer aided design software for circuit design, simulation and evaluation.
From a simple pn junction diode, predict the expected relative magnitudes of ac capacitances in a bipolar junction transistor under normal operating conditions(base emitter junction forward biased and base collector junction reverse biased).
An AC synchronous motor operates at 1200 rpm on a 60 hz, 240 Vrms supply. The supply is changed to 50 hz, 240 Vrms, What is the mechanical rotational velocity when the motor reaches steady state
Find the range in which a resistor having the following color bands must exist to satisfy the manufacturer's tolerance:
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