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A 6 pole, 60 hz induction motor is wye connected and has a rated slip of .03 with the follwoing parameters: Rs=0.5 ohms, Rr'=0.3ohms, Xs=J1 ohms, Xr'=J0.35 ohms, Xm=j20 ohmsand the total rotational losses=7300 watts. the motor runs from a 4160volt 3 phase line, line current = 237.59 @ -31.08 degress PF=.86 lagging, Sin=1.712 MVA, Qin=884 Kvars, RPI total=1.39Mw, RPD=1.35MW, pout=1.34MW, hp= 1.8*10^6, rpm=1200 efficiency= 91% and torque= 7.86*10^6 ft-lb at rated speed.
on the same 4160/2405 volt transformer secondary there are 4 induction motors. each one is rated at 5,000 hp with 90% efficiency and lagging power Factor of 0.8. also on the circuit is an induction motor rated at 3.53MW at power factor = .7 lagging.Find: a) the total secondary current and power factor.b) repeat if one of the induction motors is replaced with a 5000 HP synchronous motor with the same efficiency but with a Power Factor =0.8 leading.
In a Built in Self Test, for a combinational logic system, what are the advantages of using a counter instead of an ALFSR to generate testing vectors for 2 cases.
Design a circuit that will add either 1 or 2 to a 4-bit binary number N. Let the inputs N3, N2, N1, N0 represent N. The input K is a control signal. The circuit should have outputs M3, M2, M1, M0, which represent the 4-bit binary number M.
What are the distinguishing features of the response in the pass-band? What are the distinguishing features of the response in the stop-band? What is an all pass filter?
The message signal x(t), in the following system has a nabdwidth of 10kHz. The center frequecy of the Narrow Band Frequency Modulated (NBFM) signal nbfm(f) is 1Mhz, the frequency deviation f1=1khz and the amplitude of the NBFM signal is 1V.
A terrestrial radio link transmits a CDMA signal from a base station using a spreading code with a chip rate of 1.0 Mchips per seconds. The message data rate of the signal is 10 kbps.
Sitting in front of you is a box; you cannot see iside the box. The box has a power cord that is plugged into a working wall socket. There is a wire coming out of the box; the end of the wire outside the box is exposed (not insulated) and is not c..
If we use the PC-relative addressing mode, and want to allow control transfer between instructions up to 50 locations away, how many bits of a branch instruction are needed to specify the PC-relative offset
Calculate the de Broglie wavelength of the following: A proton with kinetic energy of 1 M eV.
First you must give all different possible connection types for them and then, for each case, you should develop some tests that can define the connection type and calculate the current passing through the capacitors.
A 3-D cubic unit cell contains four atoms whose centers are positional halfway up along each of the vertical cell edges and one atom each centered in the middle of the top and bottom faces. Make a sketch of the unit cell.
An infinite grounded conducting tube of radius 10cm is centered on the z axis. A concentric charged tube of radius 6 cm has a surface charge density of 24 uC/m2. A 1m long section of the charged tube is compressed to change its radius to 3 cm.
A time varying capacitor is characterized by the charge- voltage equation q(t) = C(t)v(t)
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