9th class Computer paper 2018 federal board

COMPUTER HARDWARE SSC-I ~ SECTION — A (Marks 08)
The time allowed: 20 Minutes.NOTE: Section-A is compulsory. All parts of this section are to be answered on the question paper itself.tt should be completed in the first 20 minutes and handed over to the Centre Superintendent. 9th class Computer paper 2018 federal board. i rose. | 7 1 | | 1 Answer Sheet No.9th class Computer paper .deer one now get

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Circle the correct option

~ Deleting/overwriting is not allowed. Do not use a lead pencil.
— Q.1 Circle the correct option i.e. A/B/C /D. Each part carries one mark.
~ jo A semiconductor benaves like a/an at high temperature.
_ A Conductor 8 Insulator
— Cc. Dielectric D. Metal (i) The process of adding an impurity in germanium is known as:
_ A Bonding 8. Cloning
_ Cc. Doping D. Compounding
_ (ww) An angle which is between 90° and 180° is called?
_ A Acute 8. Reflex
_ C. Obtuse D. Right
_ (iv) IBM 370 computer is an exampie of:

A Microcomputer 6. Minicomputer
~ c. Mainframe computer o. Laptop computer
~ (vy Unit of electric energy is:
~ A Joul 6. Ampere
~ c. Volt D. Watt :
_ tv Which of the following utility is used to arrange data in sequence?

9th class Computer paper 2018 federal board
9th class Computer paper 2018 federal board

~ A Backup 8. POST
~ C. Boot up D. Disk defragmentation 7 (vii}In the fourth band of resistor, tolerance of silver color is: ~ A 10% B 08% ~ c 18% dD. 01% ~ (vil) When the cross-sectional area of a conductor wire is decreased, its resistance: ™~ A Increases 8. Decreases c. Remains same oO. Can not be predictable
~ For Examiner’s use only: TO
~ Total Marks: Foe |
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Sections B and C 9th class Computer paper

Time allowed: 2:40 Hours Total Marks Sections B and C: 32
— NOTE: Answer any six parts from Section ‘8’ and any two questions from Section ‘C’ on the separately
provided answer book. Use supplementary answer sheet i.e. Sheet-B8 if required. Write your answers.
_ neatly and legibly.
—_ SECTION – B (Marks 18)
. @.2 Answer any SIX parts. The answer to each part should not exceed 3 to 4 lines. (6×3= 18) a White a short note on POST. — ii) Define drawing. Write any four tools which are used in drawing. diy Briefly explain the effect of AC and DC on capacitors. ~ (iv) Briefly explain reverse-biased circuit of diode with diagram. ~ WW) Briefly explain AND, OR and XNOR gates with symbols and truth tables. (wy {fa 100 £2 electric lamp is connected with 3 220 v source, calculate the current that flows through the circuit,
_ (vil) Write any three methods to protect our computer data from destructions by viruses.
(viii) Define impact printers. Briefly explain any one of its types.

SECTION — C (Marks 14)


~ SECTION — C (Marks 14)
Note: Attempt any TWO questions. All questions carry equal marks. (2×7 214)
Jazz an Explain Ohm’s law with the help of an example. Write its equation. (04)
~ b. Write any three advantages of Backup. (03)
Q4 oa, Convert (1011100), and (4840),, to decimal and then convert these back to Binary and
Hexadecimal systems respectively (04)
_ b. How are step up and step down transformers constructed? (03)
Q.6 Define the computer. Explain types of computers in detail (07)
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9th class Computer paper 2018 federal board
9th class Computer paper 2018 federal board

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