Design a system that converts a twisted pair line local loop to a 17 channel link between a security estate and a local switch(POTS)
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- Consider the line of code below. analogWrite(11, 84); The voltage at pin 11 is turns on (at 5V for Uno) and off at 500 Hz. This PWM frequency is the default value for Arduino boards. How many microseconds is the voltage at pin 11 high?When the pinch-off voltage is exceeded, ID will ____ as VDD increases. a. double b. increases c. remains the same d. decreasesExplain block schematic of TDM?
- Differentiate MCB and RCD and Explains its purpose in an installation? hp 近explain with the help of block diagram the third method of generating of SSB operation.3. In fixed channel assignment strategy, each cell is allocated a predetermined set of, a) Voice channels b) Control channels c) Frequency d) base stations
- Q6: Sectoring is a way to do what? a. Achieve branch circuits. b. Put each phone call in a different time slot. c. Do SS7 look-ahead call placement. d. Partition Voice mail boxes e. It is an ISDN-PRI way of brining in trunks f. Achieve frequency reuse. g. None of the above1. Are the following statements correct or wrong? (a) Thyristors are used only for low voltage, low current applications. (b) MOSFETs are used for high frequency applications. (c) BJT is more efficient than IGBT in high power applications. (d) GTO requires very low current applied to its gate to be turn off. (e) IGBT is a voltage driven device. 2. Are the following statements correct or wrong? (a) Thyristors are preferred to be used in the output stage of 10W IMHz transmitter. (b) MOSFETs are preferred to be used for 1000 kW motor control circuit. (c) TRIAC is used for lighting dimmer circuits. (d) IGBT in high voltage de rectifier circuits (above 5kV level). (e) BJT is the fastest switching device in power applications. Choose the correct answer for the following questions (3-7): 3. The conditions which must be satisfied to turn on the thyristor with its current is more than its latching current are: (a) The anode is more positive than the cathode and a positive current pulse is…1. Are the following statements correct or wrong? (a) Thyristors are used only for low voltage, low current applications. (b) MOSFETs are used for high frequency applications. (c) BJT is more efficient than IGBT in high power applications. (d) GTO requires very low current applied to its gate to be turn off. (e) IGBT is a voltage driven device. 2. Are the following statements correct or wrong? (a) Thyristors are preferred to be used in the output stage of 10W IMHz transmitter. (b) MOSFETs are preferred to be used for 1000 kW motor control circuit. (c) TRIAC is used for lighting dimmer circuits. (d) IGBT in high voltage de rectifier circuits (above 5kV level). (e) BJT is the fastest switching device in power applications. Choose the correct answer for the following questions (3-7): 3. The conditions which must be satisfied to turn on the thyristor with its current is more than its latching current are: (a) The anode is more positive than the cathode and a positive current pulse is…
- Convert (45.75), to base 7. (a) (63.5151..), (b) (231.3), (c) (0.625), (d) (66.25),VI. FILL-IN QUESTIONS: 1. Before the TRIAC is triggered on, the voltage across its main terminals is equal to the voltage. 2. When the TRIAC is triggered on, the voltage across its main terminal is about V. 3. Once the TRIAC is conducting, the gate_control the current to flow through the TRIAC. 4. The TRIAC can be turned off by reducing the current through it below its The TRIAC can have_or__terminal voltage and be triggered on by_applied on the gate.Which of the following multiple access techniques are used by second generation cellular systems? a) FDMA/FDD and TDMA/FDD b) TDMA/FDD and CDMA/FDD c) FDMA/FDD and CDMA/FDD d) FDMA/FDD only