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Styrene is made by dehydrogenation of ethyl benzene, which is formed by alkylation of benzene with ethylene. Propose target yields for the alkylation and dehydrogenation steps if the forecasted prices per metric ton are styrene $800, ethylene $800, and benzene $500.
Note: Structures for the compounds in Problems 2.3, 2.8, and 2.9 can be found in the Merck Index, but are not required to solve the problems.
A negative unity feedback loop with input R(s), output Y(s) and error E(s) is placed around the system \(H(s)=1/((s+p_{1})(s+p_{2})...(s+p_{q}))\)(a) Find the transfer function E(s)/R(s).
1. Calculate the Fourier transform of f(t)=5 sinc ([t-0.2]/2), and graph the magnitude and phase as function of f. 2. A military satellite uses 10 GHz for the downlink frequency. The distance to the satellite is approximately 36000 km.
How do the phase angle and current change as the resistance changes in a circuit where the frequency stays constant How do these results differ from those in the case wehre the resisntace stays the same the the frequency changes
If it is instrumented with four active strain gages on awheatstone bridge, two axial and two transverse as shown, with S,i.e. strain gage factor of 2.1, initial resistance of strain gagesR = 350 Ω, and the power supply is 10V, what will be theoutp..
What is the advantages and Disavantages of ELCB, RCB and RCD Circuit Breakers ? And Also I need the Working of RCB or Current Operated ELCB .
A step down transformer is supplied with 100 V on the primary, from a source capable of only 1 A. if the voltage on the secondary of the transformer is 20 V, what is the current available from the secondary
A 250hp, 500v dc shunt motor draws a nominal field current of 5A under rated load. The resistance is 90ohms. Calculate the ohmic value and power of the series resistor needed so that the field current drops to 4.5A
An amplifier has three amplification stages and a 1-dB attenuator in cascade. Assuming that all impedances are properly matched, what is the overall gain if the amplification factors are5, 10, and 6dB
A standard 12-V car battery has an ampere-hour rating of 30 Ah, whereas a heavy-duty battery has rating of 51 Ah. Calculate the ratio of available energy and the percentage increase in available current for starting.
Write the VHDL assignment operator for the Y1 output of a BCD-to-binary encoder. Use Boolean operators, D0-D9 as the data inputs lines and Y0-Y2 for the outputs. Inputs and outputs are active-HIGH.
The serial ports on two computers which use binary signaling are connected by a twisted pair cable. The cable has a flat frequency response up to 120KHz, with negligible group delay distortion. That is, the bandwidth of the cable is 120KHz.
Determine the estimated service demand load in volt-ampres and amperes @ 240V for a residence having the following characteristics- 2500 sq ft
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