Problem 7 These questions require answers in complete sentences. a) Explain what Mesh and Star architectures are in a VSAT network. b) Discuss the two advantages and disadvantages each of the Mesh and Star architectures. c) Name the three major types of multiple access schemes that are used in satellite systems. d) Why has a TDM approach been adopted for most downlink applications for digital VSAT and Internet applications to small terminals?
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- 1) As a student, explain the benefits of networking in your day- to-day life. e 2) What strategies would you follow to be an effective Networker?Reclung.c A on ri gle Figure 1 2. The circuit shown above is constructed with two 6.0 V batteries and three resistors with the values shown. The currents 1₁, 12, and 13 in each branch of the circuit are indicated. 2 GEOMETRY AND TRIGONOMETRY Circle A = ²² C = 2πr Cy.inder bh - re Rectangular Solid Vlh Sphere 1. Using Kirchhoff's rules, write, but DO NOT SOLVE, equations that can be used to solve for the current in each resistor. ii. Calculate the current in the 200 9 resistor. iii. Calculate the power dissipated by the 200 2 resistor. V = ar²l S.. Figure 2 The two 6.0 V batteries are replaced with a battery with voltage & and a resistor of resistance 50 2, as shown above. The voltmeter V shows that the voltage across the 200 £2 resistor is 4.4 V. (b) Calculate the current through the 50 2 resistor. (c) Calculate the voltage & of the battery. V=² S = 4; 7² Rig Triangle 2 +6² = c² sin = COS== tan 8 = OJA b C 2m. a b 6.0 V 7,4 & A - area C=circumference h-hei £= le L W = IUL r=fuu.0…II. Problem Solving. Answer the following problems. Show your complete solution for each problem on the space provided. 1. When a lightning strikes from the cloud to the ground, current as high as 25,000 amperes can occur and last for about 40µs. How much charge is transferred from the cloud to the ground during such a strike? 2. An aluminum cube has sides of length 1.80 m. What is the resistance between the two opposite faces of the cube?
- Q.6. Write a few features (5 or more) for the PSPICE software used to simulate experiments in the electronics laboratories?5. A 250-volt electrical heater is used to warm 3Li/hr of water from 19°C to 98°C. Assume heat conversion loss of 25% of the total heat supplied, how much current in amperes must be supplied to this heater. Derive with the formula below, show the cancellation, explain the step by step and DRAW a free body diagram/figure. refer with this: PE1 + KE1 + U1 + WF1 + Q1 + W1 = PE2 + KE2 + U2 + WF2 + Q2 + W2 + E losses.2. what could be the voltage drop and power loss due to the resistance. If the resistance of a cable is 100ohms, with a current of 20mA ? Voltage drop = 2 volt, power loss = 4*10^-4 wa 3. calculate the attenuation coefficient per kilometer. of an optical cable of length 5 Km, with an input power 50watts and output power 40watts, Enter your answer 4. what should be the pulling tension for 4 pair UTP 6 AWG ?, If a 4 pair UTP 24AWG is used to pull with a maximum tension of 110newtons ? 27.5 newton 5. Find the fiber core radius If the bend radius of fiber optic cable is 4mm,
- 2.1:Draw a circuit diagram of the circuit 2.2:Briefly explain how to connect an ammeter to measure the current in the circuit. 2.3:Briefly explan how to connect a voltmeter to measure the potential difference across a resistor in the circuit. 2.4: explain whether it matters where the ammeter is connected in the circuit. 2.5:explain whether it matters where the voltemeter is connected in the circuit.Capacitance, Charge and Voltage: Q = CV 1. Click the Reset Button on the bottom right of the PHET simulation. 2. CHECK Plate Charges and Bar Graphs boxes in the upper right so your display resembles the graph below. 3. SET the Plate Area to 200 mm² and the Separation to 4.0 mm. Capactance Tup Pate Charge oc Sured Energy Pu Charges r Graphs O e Fd Cument Direction 1500 V 4. Connect the voltmeter across the capacitor by placing the red on the top plate and black on bottom. If the voltmeter reads a negative, switch the red and black. 5. Set the battery Voltage to 0.25 V. Record the measured plate charge, Q. 6. Repeat Step 5 for each Voltage in Table 3. Table 3: Charge and Voltage Voltage |(V) Plate Charge |(pC) 0.25 V 0.50 V 0.75 V 1.00 V 1.25 V 1.50 VSolve the following: 1. A certain light bulb has a resistance of 150 when lighted. How much current will flow through it when connected across a 220 V, its normal operating voltage? Draw the circuit schematic diagram>Fin 2. Find the potential difference (Emf) in a certain electric circuit with current flowing at 18 ampere and a floor Polisher connected with resistance of 12 ? 3. A 12 volts battery operates a 15 ohms digital scale for 5.2 minutes. a) Find the current flowing b) the charges Transferred with the given time. 4. What is the resistance of a conductor at 50° C if its resistance at 0°C is 1 ohm and the temperature coefficient of resistance of 9.8 x 10-³/°C 5. A silver wire has a resistance of 2.3 at 0°C and a temperature coefficient of resistance of 3.75 x 10-³/°C. What is final temperature when the final resistance is 3.8 ohms. ? 6. Complete the table: Electric Circuit and Ohm's Law V, Volts 8 volts 20 volts 10 Volts 36 volts I, Ampere 2.8 mA 40A 130mA R, ohms 156 02 25 ΚΩ…
- A ceiling fan operates at three speeds, using 120 V of electricity from the wall. At low speeds, it uses 0.25 A. Calculate the resistance needed to generate that current. Then in 1-2 sentences, describe how the resistance would change at medium and high speeds if larger currents are needed at those speeds. Your answer should include the calculated resistance and a sentence describing your reasoning.Q1: a. Compare between AND,and XOR gates ( Definition and truth tables)? (2) b. The diagram below shows five logic gates symbol and five names (2.5) Draw a line between each logic gate symbol and its correct name. Logic Gate Symbol Name D- AND NOT NOR Da XOR NANDPROTOTYPING: Provide illustrations, computations, and textual descriptions which accurately solve the problem given below. You may provide your answers in the field below. What do you think will happen to a load that was rated at 1 8v, 35mA i it was connected dvectiy on a Sv power supply? is the current setup provides optimal operation? Or there is a better construction for the circuit? Considering that you are only going to use the given power supply and the load?