BHARAT SEVAK SAMAJ
Time: 2 hrs. Max. Marks: 100
I. Fill in the blanks: (5 x 2 = 10)
1. GPRS stands for --------------.
2. -----------is the commonly used IC in ringer section.
3. ----------- modulation is used for mobile transmission.
4. ----------- types of tools are used for cellular phone rework.
5. ----------is commonly used to produce sound.
II. State whether True or False: (5 x 2 = 10)
1. The popular communication is GSM.
2. SIM is a parallel memory.
3. Cellular phone is a transceiver.
4. MC 3371 is Ringer IC.
5. DC Volt of Telephone is 30V.
III. Answer any SIX of the following: (6 x 10 = 60)
1. Define Bluetooth.
2. What is call barring?
3. Draw and explain the block diagram of Mobile Phone hand set.
4. What will happen if any of the bridge diode get open? Write reason.
5. Explain the working a full wave rectifier having a resistive load.
6. Explain Dialing.
7. Explain the basic Mobile Phone System.
IV. Answer any ONE of the following: (1 x 20 = 20)
1. What are the procedures you will follow to rectify the no ring problem?
2. Explain TDMA system and CDMA.