Q Paper

GREATER NOIDA INSTITUTE OF TECHNOLOGY,GR. NOIDA Department of Electronics & Communication Engg. SESSIONAL TEST-1 EC-IVTH YEAR SUBJECT NAME: Satellite communication (TEC-024) M. Time: 90 Min.

M. Marks: 30

NOTE: Attempt any two parts out of three in every question. Q-1: (2×2 = 4) a) Differentiate between b) List the different inlets/outlets connections of a switching system. c) Differentiate between pulse dialing and multi frequency dialing. Q-2: (2×4 = 8) a) Briefly explain the basic functions of a switching system. b) Describe the construction and working of reed relay switch. c) Draw and discuss the principle of register translator senders in a switching system. Q-3: (2×5 =10) a) Differentiate between folded and non folded networks. Draw a block diagram to show the various elements of a switching system. b) Give the classification of switching system. Compare the manual exchange with automatic exchange. c) What do you understand by circuit switching? Derive an expression for data transfer time in circuit switching. Q-4: (2×4 = 8) a) What do you meant by signaling tones? Briefly explain its types. b) What is the principle of crossbar switching? Explain its blocking configuration also. What is a despun antenna?How is despping achieved? Explain. c)