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What To Check When Commissioning Variable Speed Drives ?
A cyclotron used to accelerate alpha [articles (m=6.55 x 10^-27kg, q=3.2x10^19C) has a radius pf .50, and a magnetic field of 1.8T (a)what is the period of revolution of the alpha particles (b)what is their kinetic energy
the closed limb of a macleod gauge has a diameter of 1mm and a value v above the level of the opening w of 250cm3.
A Dc machine is connected across a 240-volt line. It rotates at 1200 rpm and is generating 230 volts. the armature current is 40amps. A) Is the machine functioning as a generator or motor
Two amplifiers(CS) connected in cascade. The input voltage to the first stage has a source voltage Vsig and Rsig= 100KOhm. Rv=10KOhm AND IS CONNECTED TO THE DRAIN OF THE SECOND STAGE. BOTH TRANSISTORS HAVE Id=.25mA and Vov=.25V
Baseball cards are two and a half inches by three and a half inches how many baseball cards. On a bulletin board that is 45 inches long by 36 inches wide
The sampling frequency in a DSP system is fs=8 kHz. Anti-aliasing filter used in the system is the second-order Butterworth filter with cutoff frequency of fc=3.4 kHz. What is the percentage of aliasing level at the frequency f=2.5 kHz
the voltage drops across three resistors in series are measured 10v 15v and 25v. if the largest resistor is 47 ohms
In a circuit, there is a resister, a conductor and a capacitor connected to voltage source. R = 25 ohms, L = 20 milliH, and C = 50 microF. a) Find the total impedance of the network if the frequency is 60 Hz.
Draw the per-phase impedance diagram of the power system and Draw the impedance diagram in per-unit system
A digital circuit uses two 74LVC2G74 D-FFs operating at VCC =2.5 V. (The PRE and CLR are deactivated.) The D input to one of theFFs is driven by the Q-bar output of the same FF. The D input tothe other FFs is driven by an XOR gate.
(a) Determine the Fourier series coefficients of x(t) (b) Determine the Fourier series coefficients of y(t) (c) Determine the Fourier series coefficients of z(t) through direct expansion of z(t) in trigonometric form.
When we give sinusoidal voltage across a capacitor the current across it has 90 degree phase lag. Then this means as voltage increases(sine) the current decreases(cosine)[in 1st quadrant]....Whether this indicates capacitor exhibits negative r..
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