Applied physics BSSE/CS/IT 1 Semester/Term University Of Sargodha (UOS) 2018

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B$ 1" Term Examination 2018

Subject: CS / 11 / SH

Paper: Basic fice

lics (PHY-2210,

Maximum Marks: 80

Time Allowed: 2:30 Hour

Note: Objective part is compulsory. Attempt any three questions from subjective part.

Objective Part

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Q1. Write Short answer of the following on your answer sheet.

(2•16=32)

•A. Detine rectification? Name its types?

B. Write the causes of Fiber losses? '

•ColCan a transformer operate on DC?

D. Detine dielectric strength of a medium?

E. What is Zener breakdown?

F. What are passive circuit clements d

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6. What is the important feature of parallel circuis over series circuit?

H. Find resistance value and tolerance sate of blue-white-gold-silver?

1. What is the effect of temperature on harrier voltage?

J. What are draws backs of ICS?

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K. What is ideal diode?

I. Differentiate hercen linear and non-Jinear devices?

V. What is the effect of doping on width of depletion layer?

). Why is Silicon preferred to Germanium for semi-conductor devices?

O. What is the behavior of semi-conductor at zero degree Kelvin?

P. Do pure semi-conductors obey Ohm's law?

Subjective: (3 * 16=48)

Q2.

a). Describe the working of a potentiometer.

b, find the values of following questions with respect

to given diagram

Branch currents

li.

IlI.

Current and power supplied by the battery

Current and power supplied by the battery it an

accidental short occurs between points 1 and B

020

A V

210

Q3. a. Define transformer? Give principal and working of core type transtormer?

b. A power transformer has 100 primary turns and 600 secondary turns. If the primary

a doltage is 120 Volt and full load primary current is 1? A. Find secondary voltage and

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secondary current?

0. Explain input and our characteries or X ransor inCB comfiguriapi.com

Q5. a. Define rectification? Explain half' wave rectification with the help of single diode'

b. What is light critting diode? Give its construction and working?

Q6. Detine Fiber Optics? What is the structure of Optical Fibers? Also define the classification

of Optical liber'

**.

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