A small circular parabolic reflector, often referred to as dish, is now being advertised as a TV antenna for direct broadcast. Assuming the diameter of the antenna is 1 meter, the frequency of operation is 3 GHz, and its aperture efficiency is 68%, determine the following: (a) Physical area of the reflector (in m2 ). (b) Maximum effective area of the antenna (in m2 ). (c) Maximum directivity (dimensionless and in dB). (d) Maximum power (in watts) that can be delivered to the TV if the power density of the wave incident upon the antenna is 10 ?watts/m2 . Assume no losses between the incident wave and the receiver (TV).

What is the estimated rise time and the estimated overshoot : A certain unity feedback control system has the closed-loop transfer function: T(s)= Y(s)/R(s)= (s/10+1)/((s/100+1)*(((s/20)^2)+s/20+1))) a) What is the estimated rise time b) What is the estimated overshoot |

What is the total charge on he inner shell : a positive charge of -4 microcoulombs is llocated at the center of a spherical shell of inner radius 2cm and outer radius 3cm, what is the total charge on he inner shell |

Explain equation represents the solubility process : Calculate the mass (g) of NiS that will dissolve in 1100 mL of 0.169 M NiCl2 solution. The equation represents the solubility process. |

Find the forces of the two supports on the plank : A uniform wooden plank of mass 15kg and total length 10m rests on two supports. Find the forces of the two supports on the plank |

Determine maximum effective area of the antenna : A small circular parabolic reflector, often referred to as dish, is now being advertised as a TV antenna for direct broadcast. Assuming the diameter of the antenna is 1 meter, the frequency of operation is 3 GHz |

Find direction of the force exerted by the hinge : Consider a flagpole (mass 20kg and length 10m) attached to the wall by a cable, What is the magnitude and direction of the force exerted by the hinge on the flagpole |

Explain which solution is more acidic : solution x has a pH of 9.5 and solution y has a pH of 7.5. a)which solution is more acidic? b)what is the [H3O^+] in each? c)what is the [OH^-] in each |

Find the drift velocity of electrons : A silver wire has a cross sectional area A = 2.0 mm2. A total of 9.4 × 1018 electrons pass through the wire in 3.0 s. What is the drift velocity of these electrons |

What is the difference between series and parallel circuit : (1) What is the difference between a series and a parallel circuit (2) How do you evaluate the total resistance of a parallel circuit |

## Develop contoller as sequential ckt using min num of d-ffTo develop contoller as a sequential circuit using minimum number of D flip-flops and the minimum number of external gates. the controller should set the values of the control lines appropriately to drive the combinational logic circuit. |

## What is the capacitance of the capacitor in microfaradsAn 80KHz sinusoidal voltage has zero phase angle and a maximum amplitude of 20 mV. When this voltage is applied across the terminals of a capacitor, the resulting steady state current has a maximum amplitude of 0.7 mA. |

## Create a function that takes a time in seconds as an inputFor example, if the time given is 10213 seconds, the function will give back 2 hours and 50.22 minutes. The function shall not print the results to console, but instead pass them back to the calling function. |

## Find the total circuit impeadance and current sourceFind the associated answers for: total circuit impeadance (Zt), Current source (RMS), Vc (RMS) w/ power factor, Vr (RMS), all in complex form/ rectangular form. Remember each question has to be done three times, one for each frequency. |

## What force f is required by the operatorThe floor causes couple moments Ma =60 Nm and Mb =35 Nm on the brushes of the polishing machine. What force F is required by the operator so that the resultantmoment on the polisher is zero. Set a = .3 m. |

## Digital systems and microprocessorsDesign a sequential system to continuously output your set of eight different digits (01275438) in binary at the rate of one digit per clock pulse. |

## What are the four characteristic parametersWhat are the four characteristic parameters of transmission line? Which parameter is used to calculate the real loss? Which parameter is used to calculate the charging current? Which parameter is almost negligible and why? |

## What is the difference between series and parallel circuit(1) What is the difference between a series and a parallel circuit (2) How do you evaluate the total resistance of a parallel circuit |

## Determine the power dissipated by the top surface of chipA rectangular chip has a top surface of 0.5 cm by 2 cm cooled by air at 20 oC with h = 150 W/m2.K. There are also 16 connector pins, 1 mm wide, 0.5 mm thick, 6 mm long and k = 60 W/m.K attached to a circuit board at 30 oC. |

## Calculate the built-in voltage of a junctionCalculate the built-in voltage of a junction in which the p and n regions are doped equally with 10^16 atoms/cm3. Assume ni =.5x10^10/cm^3. With the terminals left open, what is the width of the depletion region |

## What is the complex admittance in siemensAn input signal of 10V at 0o is applied to a parallel RLC circuit with resistor R = 10 , inductive reactance XL = 20 , and a capacitive reactance XC = 10 . All three components are connected in parallel to the source. |

## Design synchronous sequential ckt by flip flop excitationDesign a synchronous sequential circuit with one input line and one output line that recognizes the input string x = 1111. The circuit is also required to recognize overlapping sequence such that if the input string is x = 1101111111010 |

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