The first task : Seminar Topic 6 – Operation Information Systems Investigate teleworking and how teleworkers operate. From your findings identify the types of operations information systems that would be required to support and administer this type of operation within an organization

## The first task : Seminar Topic 6 – Operation Information Systems Investigate teleworking and how teleworkers operate. From your findings identify the types of operations information systems that would be required to support and administer this type of operation within an organization

Now a day’s individuals and organizations uses information technology (IT) … Read More...
Que 1: true of false a) Both silicon and germanium atoms have four valances electrons b) When forward-biased , a diode has a very high resistance c) A zener diode is designed to operate in the forward-bias region and has higher reverse breakdown voltage level than regular diode Write the word or phrase that best completes each statement or answers the questions: d) In semiconductor, in addition to the electron flow, there is also another kind of charge flow referred as………………. e) A silicon diode in placed in series with 2kΩresistor and a 14 V dc power supply. The current ID is: i) 6.65 mA ii) 2.2 mA iii)7.5 mA iv) 14 mA f) The series resistor that limits the forward current length through a silicon diode to 8 mA if the power supply voltage is 9.5V is : i) 1.1 kΩ ii) 2.2 kΩ iii) 9.5 mA iv) 4.7 mA FIGURE g) Determine the diode current IZ for the circuit of figure 1-2: assume VZ = 3.9 V i) 8.1 mA ii) 3.55 mA iii) 24.5 mA iv) 13.64 mA h) Determine the current through a 20 mA yellow LED when the power supply voltage is 15 V the series resistor is 2k ohm and the diode is put in backward. Assume VLED = 2V i) 20 mA ii) 0 mA iii) 10 mA iv) 6.5 mA Write the word or phrase that best completes each statement or answers the questions: i) Zener diode is a p-n junction diode that is desgined for specifc…………………voltage j) ………………………….is the process by which impurity atoms are introduced to the instrisic semiconductor in order to alter the balance between holes and electrons. 1) The average value of s full-wave rectifier with a peak vaue of 17V ia 108V 2) If the frequency of input signal of the full wave reflector is 60Hz, the output frequency is 120Hz 3) The cathode of a zener diode, when conducting is:y i) at 0.7V ii) more positive than anode iii) more negative than anode iv) -0.7V 4) A given transformer with turn ratio 12:1has an input of 115V at 60Hzthe paek output voltage v0 (p) is i) 9.58 V ii) 6.78V iii) 11.5 V iv) 13.55 V FIGURE 2-1 5) The output voltage of V0(DC)for the full wave rectifier of figure 2-1 is i) 18.07 V ii) 12.78 V iii) 8.3 V iv) 5.74 V FIGURE 2-2 6) The voltage V2(P) for the full-wavr bridge rectifier of figure 2-2 is i) 17.37 V ii)1 6.67 V iii) 12.78 V iv) 18.07 V 7) Assume the current I0(DC) in figure is 100mA and C= 2400µF .the ripple voltage vr (p-p) i) 694mV ii) 424 mV iii) 121 V iv) 347 V Use figure 2-3 for questions below: Assume that RS = 75, RL = 160 FIGURE 2-3 8) The output voltage V0 is i) 7.5 V ii) 10 V iii) 8.5 V iv) 12 V Write the word or phrase that best completes each statement or answers the questions: 9) The magnitude of the peak-to-peak ripple voltage vr (p-p) is directly proportional to the output …………………. 10) The ripple voltage at the filter section vr (p-p) can be reduced by increasing the value

## Que 1: true of false a) Both silicon and germanium atoms have four valances electrons b) When forward-biased , a diode has a very high resistance c) A zener diode is designed to operate in the forward-bias region and has higher reverse breakdown voltage level than regular diode Write the word or phrase that best completes each statement or answers the questions: d) In semiconductor, in addition to the electron flow, there is also another kind of charge flow referred as………………. e) A silicon diode in placed in series with 2kΩresistor and a 14 V dc power supply. The current ID is: i) 6.65 mA ii) 2.2 mA iii)7.5 mA iv) 14 mA f) The series resistor that limits the forward current length through a silicon diode to 8 mA if the power supply voltage is 9.5V is : i) 1.1 kΩ ii) 2.2 kΩ iii) 9.5 mA iv) 4.7 mA FIGURE g) Determine the diode current IZ for the circuit of figure 1-2: assume VZ = 3.9 V i) 8.1 mA ii) 3.55 mA iii) 24.5 mA iv) 13.64 mA h) Determine the current through a 20 mA yellow LED when the power supply voltage is 15 V the series resistor is 2k ohm and the diode is put in backward. Assume VLED = 2V i) 20 mA ii) 0 mA iii) 10 mA iv) 6.5 mA Write the word or phrase that best completes each statement or answers the questions: i) Zener diode is a p-n junction diode that is desgined for specifc…………………voltage j) ………………………….is the process by which impurity atoms are introduced to the instrisic semiconductor in order to alter the balance between holes and electrons. 1) The average value of s full-wave rectifier with a peak vaue of 17V ia 108V 2) If the frequency of input signal of the full wave reflector is 60Hz, the output frequency is 120Hz 3) The cathode of a zener diode, when conducting is:y i) at 0.7V ii) more positive than anode iii) more negative than anode iv) -0.7V 4) A given transformer with turn ratio 12:1has an input of 115V at 60Hzthe paek output voltage v0 (p) is i) 9.58 V ii) 6.78V iii) 11.5 V iv) 13.55 V FIGURE 2-1 5) The output voltage of V0(DC)for the full wave rectifier of figure 2-1 is i) 18.07 V ii) 12.78 V iii) 8.3 V iv) 5.74 V FIGURE 2-2 6) The voltage V2(P) for the full-wavr bridge rectifier of figure 2-2 is i) 17.37 V ii)1 6.67 V iii) 12.78 V iv) 18.07 V 7) Assume the current I0(DC) in figure is 100mA and C= 2400µF .the ripple voltage vr (p-p) i) 694mV ii) 424 mV iii) 121 V iv) 347 V Use figure 2-3 for questions below: Assume that RS = 75, RL = 160 FIGURE 2-3 8) The output voltage V0 is i) 7.5 V ii) 10 V iii) 8.5 V iv) 12 V Write the word or phrase that best completes each statement or answers the questions: 9) The magnitude of the peak-to-peak ripple voltage vr (p-p) is directly proportional to the output …………………. 10) The ripple voltage at the filter section vr (p-p) can be reduced by increasing the value

Geometric versus Componentwise Vector Addition Learning Goal: To understand that adding vectors geometrically or using components yields the same result. Vectors may be manipulated using either geometry or components. In this tutorial, we consider the addition of two vectors using these methods. Vectors A and B have lengths A and B, respectively, and B makes an angle θ from the direction of A. Vector addition using geometry Vector addition using geometry is accomplished by placing the tail of one vector, in this case B, at the tip of the other vector, A (Figure 1) and using the laws of plane geometry to find C=A2+B2−2ABcos(c)−−−−−−−−−−−−−−−−−√ and b=sin−1(Bsin(c)C), where the length C and angle b are those of the resultant (or sum) vector, C=A+B. Vector addition using components Vector addition using components requires that a coordinate system be chosen. Here, the x axis is chosen along the direction of A (Figure 2) . Given the coordinate system, the x and y components of B are Bcos(θ) and Bsin(θ), respectively. Therefore, the x and y components of C are given by the equations Cx=A+Bcos(θ) and Cy=Bsin(θ). Part A Which of the following sets of conditions, if true, would show that Equations 1 and 2 above define the same vector C as Equations 3 and 4? The two pairs of equations give the same Check all that apply. length and direction for C. length and x component for C. direction and x component for C. length and y component for C. direction and y component for C. x and y components for C.

## Geometric versus Componentwise Vector Addition Learning Goal: To understand that adding vectors geometrically or using components yields the same result. Vectors may be manipulated using either geometry or components. In this tutorial, we consider the addition of two vectors using these methods. Vectors A and B have lengths A and B, respectively, and B makes an angle θ from the direction of A. Vector addition using geometry Vector addition using geometry is accomplished by placing the tail of one vector, in this case B, at the tip of the other vector, A (Figure 1) and using the laws of plane geometry to find C=A2+B2−2ABcos(c)−−−−−−−−−−−−−−−−−√ and b=sin−1(Bsin(c)C), where the length C and angle b are those of the resultant (or sum) vector, C=A+B. Vector addition using components Vector addition using components requires that a coordinate system be chosen. Here, the x axis is chosen along the direction of A (Figure 2) . Given the coordinate system, the x and y components of B are Bcos(θ) and Bsin(θ), respectively. Therefore, the x and y components of C are given by the equations Cx=A+Bcos(θ) and Cy=Bsin(θ). Part A Which of the following sets of conditions, if true, would show that Equations 1 and 2 above define the same vector C as Equations 3 and 4? The two pairs of equations give the same Check all that apply. length and direction for C. length and x component for C. direction and x component for C. length and y component for C. direction and y component for C. x and y components for C.

Toyota Motor Corporation  Ever since 1957, after the Crown was … Read More...