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(Download) CBSE Class-12 Sample Paper 2019-20 : Security

Posted: 27 Sep 2019 11:10 PM PDT

(Download) CBSE Class-12 Sample Paper 2019-20 : Security

Class: XII
Security-(800)
Sample Question Paper 2019-20

SECTION–A

Answer any 10 questions out of the given 12 questions:
1. Proximity card reader emits:
a. Water vapours
b. Infra-red light
c. Radio frequency signals
d. X-rays

2. Returnable gate pass is meant for
a. Material
b. Contract workers
c. Permanent workers
d. Frequent visitors

3. Abbreviation EVD stands for
a. Electronic Visual Device
b. Explosion Velocity Detector
c. Election Voting Decoder
d. Explosive Vapour Detector

4. Which of the following acts as key to an access control system?
a. DFMD
b. Access card
c. CPU
d. None of the above

5. Unlawful Activities (Prevention) Amendment Act – 2011 deals with
a. Excise and customs
b. Prevention of Poaching
c. Criminal and terrorist activities
d. Non-payment of debt

6. Uncontrolled dispersal of a escape mob may lead to
a. Stampede
b. Peaceful dispersal
c. Protests
d. None of the above

7. Anger is the characteristic feature of
a. Stampede
b. Peaceful dispersal
c. Protests
d. None of the above

8. Who is a difficult visitor?
a. A civilized person
b. An angry person
c. A hungry person
d. A smiling person

9. Advantage of computer-based visitor management system is?
a. It can handle a large number of visitors
b. It can store information about visitors
c. It can recall information about visitors
d. All of the above

10. An accident in the premise is a:
a. Security incident
b. Normal incident
c. Criminal incident
d. Safety incident

11. An Improvised Explosive Device can be set off by a -
a. Timer
b. Timed fuse
c. Cell phone
d. All of the above

12. Abbreviation CRM stands for:
a. Customer Relationship Management
b. Central Resource Management
c. Combined Response Management
d. None of the above

Very Short Questions: (2 marks each).
Answer any 5 questions out of the given 7 questions:
13. What is the aim of the personnel or vehicle search?
14. Write a short note on Pan Tilt Zoom (PTZ) camera.
15. Under the provision of Section 46 CrPC, enumerate the provisions for the arrest of women?
16. Write a short note on Visual or Fixed Patrol.
17. What are types of surveillance?
18. What do you understand by incident management?
19. How does study of existing security system helps in security survey?

Short Questions: (3 marks each).
Answer any 5 questions out of the given 7 questions:
20. What is incident management? What are its components?
21. Describe the circumstances in which frisking of a person entering or exiting from a premises by Security Guards is justified.
22. Define Bailable and Non-bailable Offences.
23. Explain visual or fixed patrol?
24. Write short note on escorting a visitor.
25. What are the categories of Improvised Explosive Devices?
26. Which factors would you keep in mind while conducting a security survey of the perimeter of premises?

SECTION –B

Long/Essay type questions (5 marks each).
Answer any 3 questions out of the given 5 questions:
27. Write a note on intruder alarm.
28. Write short notes on the following:-
a. Indian Penal Code (IPC)
b. Code of Criminal Procedure (Cr PC)
29. Describe the various other purposes for which patrolling of an area is important.
30. Define surveillance. What are the types of surveillance?
31. Define Customer Relationship Management (CRM). What are its benefits?

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(Download) CBSE Class-12 Sample Paper 2019-20 : Web Applications

Posted: 27 Sep 2019 10:59 PM PDT

(Download) CBSE Class-12 Sample Paper 2019-20 : Web Applications

Class: XII
Web Applications-(796)
Sample Question Paper 2019-20

SECTION–A

Attempt any ten from the following
1. It lacks the editing power of a general-purpose editor such as Adobe Premiere, but is streamlined for fast linear operations over video..
(a) Sound Forge
(b) VirtualDJ
(c) MixPod
(d) VirtualDub

2. _______ is an offline playback, editing, encoding, animation and visual effects tool based on the Jashaka technology that allows you to create professional digital media on your desktop.?
(a) XML
(b) HTML5
(c) Cinefx
(d) SoundForge

3. _________ will work on .wmv, .flv, .rm and .mpg files.
(a) Virutal DB
(b) Movica
(c) PowerPoint
(d) All of the above

4.Which of the following is not a video editing software?
(a) Adobe ImageReady
(b) Paint Brush
(c) DreamWeaver
(d) All of the above

5. _____________ is another Windows-based converter for audio and video
(a) Blender convert
(b) Quick Media Converter
(c) AVIEditor
(d) None of the above

6._____________ is a wizard program for Windows and Mac that helps users easily insert video to the website or blog
(a) Video LightBox
(b) Virtual Sna
(c) Free Video coding
(d) NONE of the above

7.________________ as the name hints, is developed to convert videos into HTML5 supported WebM, MP4, and OGG formats:
(a) Quick Media Converter,
(b) Easy HTML5 Video.
(c) FreeMake video Converter.
(d) OEMBED

8.____________ can be used on client side as well as on server side?
(a) VBScript
(b) JavaScript
(c) AVIEditor
9d) None of the above

9.NaNin JavaScript stands for
(a) Number and null
(b) Numeric number
(c) Not a number
(d) Number is a null

10. ParseInt(“010”, 10) in JavaScript will give the following output :
(a) 10
(b) 010
(c) 2
(d) 3

11. >>>in JavaScript is known as
(a) bitwise shift right operator
(b) bitwise shift left operator
(c) input operator
(d) output operator

12. ‘%’ in JavaScript is
(a) a logical operator
(b) an arithmetic operator
(c) bitwise operator
(d) comparison operator

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(Download) CBSE Class-12 Sample Paper 2019-20 : Database Management Applications

Posted: 27 Sep 2019 10:47 PM PDT

(Download) CBSE Class-12 Sample Paper 2019-20 : Database Management Applications

Class: XII
Database Management Applications-(795)
Sample Question Paper 2019-20

SECTION–A

Attempt any ten from the following 10 x 1=10
1. The number of attributes in a relation is called the ____________of a relation.
a. Tuple
b. Table
c. Cardinality
d. Degree

2. In order to restrict the values of an attribute within a range, _________constraint to be used.
a. Check
b. NULL
c. Default
d. NOT NULL

3. _______________ command is used to eliminate duplicate values of an attribute in the select query
a. Update
b. Unique
c. Distinct
d. No Duplicate

4. _____________ command is used to delete the structure of the table
a. Drop Table
b. Drop Database
c. Delete Table
d. Alter Table

5. ________________is the use of electronic i.e. information and communication technology (ICT) tools for governance by the government for the citizens
a. E Learning
b. e Commerce
c. E-Governance
d. E payment

6. E business offers advantages and opportunities, there are also risks and barriers. These include
a Violation of customer privacy
b Spikes causing websites to fail at peak times
c Internet hackers penetrating company security
d All of the above

7. Which segment do Flip Kart belong to ?
a B2B (Business to Business)
b C2C (Consumer to Consumer)
c C2B (Consumer to Business)
d B2C (Business to Consumer)

8. ____________ translates the byte code into machine code and then executes it.

9. _____________ is a method convert the string into its integer equivalent.
a. Integer.toString()
b. Integer.valueOf()
c. Integer.parseInt()
d. Float.parseFloat()

10. Which of the following statements is false about objects?
a. Object is an instance of a class
b. Object is capable of storing data
c. Each object has its own copy of methods
d. None of the above

11. ___________ statement is used to use a prebuilt class and associated methods in those class from the package
a. Include
b. Public
c. Extend
d. Import

12.___________ method of a String class converts all of the characters in this String to lower case
a. Lcase()
b. toLowerCase()
c. toLcase()
d. isLower()

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(Download) CBSE Class-12 Sample Paper 2019-20 : Troubleshooting Maintenance Of Electronic Equipments

Friday, September 27, 2019

CBSE PORTAL : (Download) CBSE Class-12 Sample Paper 2019-20 : Troubleshooting Maintenance Of Electronic Equipments

Posted: 26 Sep 2019 11:59 PM PDT

(Download) CBSE Class-12 Sample Paper 2019-20 : Troubleshooting Maintenance Of Electronic Equipments

Class: XII
Troubleshooting Maintenance Of Electronic Equipments-(790)
Sample Question Paper 2019-20

SECTION–A

Answer any 10 questions out of the given 12 questions:
1. Ribbon type microphone has important characteristics of two faces. What are those two faces?
(a) To and fro
(b) Front and back
(c) Forward and reverse
(d) Up and down

2. The process of magnetic recording is based on principle of
(a) Electromagnetic induction
(b) Mutual induction
(c) Self-Induction
(d) Both A and B

3. Impedance of loudspeaker is of the order of
(a) Ohm
(b) Megaohm
(c) Kilo ohm
(d) Gegaohm

4. The diameter of circular plastic coated CD disc is
(a) 130 mm
(b) 220 mm
(c) 20 mm
(d) 120mm

5. Enclosure of a loudspeaker act as a
(a) Infinitebaffle
(b) Woofer
(c) Tweeter
(d) Finite baffle

6. CD player reads recorded information from
(a) Centertrack
(b) Innermosttrack
(c) Outermosttrack
(d) None of theabove

7. In monochrome Television, the contrast is controlled by
(a) DC voltage
(b) AC voltage
(c) DC current
(d) Both A and B

8. In Television receiver, if the vertical sync is missing, the picture will
(a) Roll up and down
(b) Roll horizontally
(c) Not distorted
(d) No Picture

9. Which device would be the best aid in shorted track detection?
(a) Multimeter
(b) Logic Pulser
(c) Current Tracer
(d) Oscilloscope

10. Which test equipment allows comparison between input and output signals?
(a) Single channel oscilloscope
(b) Logic probe
(c) Spectrum Analyzer
(d) Multitrace Oscilloscope

11. Full form of DTMF is
(a) Double throw multiple functions
(b) Dual Tone multiple frequency
(c) Digital tunable multiplex phone
(d) Double tunable mobile frequency

12. When in a TV receiver both sound and picture are weak and distorted, the problem is most likely in
(a) AFC
(b) FMD etector
(c) Tuner
(d) Video Amp

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(Download) CBSE Class-12 Sample Paper 2019-20 : Operation And Maintenance Of Communication Devices

Wednesday, September 25, 2019

CBSE PORTAL : (Download) CBSE Class-12 Sample Paper 2019-20 : Operation And Maintenance Of Communication Devices

(Download) CBSE Class-12 Sample Paper 2019-20 : Operation And Maintenance Of Communication Devices
(Download) CBSE Class-12 Sample Paper 2019-20 : Electrical Appliances
(Download) CBSE Class-12 Sample Paper 2019-20 : Electrical Machines
(Download) CBSE Class-12 Sample Paper 2019-20 : Insurance

Posted: 25 Sep 2019 12:24 AM PDT

(Download) CBSE Class-12 Sample Paper 2019-20 : Operation And Maintenance Of Communication Devices

Class: XII
Operation And Maintenance Of Communication Devices-(789)
Sample Question Paper 2019-20

SECTION–A

Answer any 10 questions out of the given 12 questions:
1. The frequency range of 300KHz to 3000KHz is known as
(a) Low frequency
(b) Medium frequency
(c) High Frequency
(d) Very High frequency

2. Noise is added to a signal in a communication system
(a) At the receiving end
(b) At transmitting end
(c) In the channel
(d) During regeneration of the information

3. A transponder is a satellite equipment which
(a) Receives the signal from earth station and amplifies it
(b) Changes the frequency of received signal
(c) Retransmits the received signal
(d) All of the above

4. The quality of space link is measured in terms of_ ratio
(a) C/N
(b) S/N
(c) G/T
(d) EIRP

5. CDMA rejects
(a) Narrow band interference
(b) Wideband interference
(c) Both A and B
(d) None of the above.

6. Which type of PCB requires minimum soldering on component side in order to avoid replacement oriented difficulties ?
(a) Single sidedPCB
(b) Double sidedPCB
(c) Both a and b
(d) None of the above

7. Which of the following is not a virus in mobile phone ?
(a) Trojan Horse
(b) Fake android apps
(c) spyware
(d) Avast

8. The maximum allocated frequency deviation in FM is
(a) 10MHz
(b) 75MHz
(c) 100MHz
(d) 125MHz

9. In digital modulation
(a) Carrier Signal is digital and message signal is analog
(b) Message signal is digital and carrier signal is analog
(c) Both carrier and message signals are digital
(d) Both carrier and message signals are analog

10. WiFi stands for
(a) Wireless fidelity
(b) Wideband function
(c) wireless function
(d) None of the above.

11. IMT2000 is a digital mobile system that function as
(a) Pager
(b) Cordless
(c) Low earth orbit satellites
(d) All of theabove.

12. CDMA offers
(a) Soft handoff
(b) Hard Handoff
(c) Hanofff varies from cell to cell
(d) None of the above

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(Download) CBSE Class-12 Sample Paper 2019-20 : Electrical Appliances

Posted: 25 Sep 2019 12:15 AM PDT

(Download) CBSE Class-12 Sample Paper 2019-20 : Electrical Appliances

Class: XII
Electrical Appliances-(788)
Sample Question Paper 2019-20

SECTION–A

Answer any 10 questions out of the given 12 questions:
1. Which among these is the application of universal motors?
(a) Vacuumcleaners
(b) Fans
(c) Hairdryers
(d) Washingmachines

2. What is the typical value of the capacitor used in ‘capacitor start capacitor run’ single phase induction motor?
(a) 5 μ F
(b) 40 μ F
(c) 300 μ F
(d) 1000 μ F

3. Which timer is used in fully automatic washing machines?
(a) Electricaltimer
(b) Electronictimer
(c) Mechanicaltimer
(d) Springtimer

4. What is the first equipment placed in the Uninterrupted Power Supply (UPS)?
(a) Inverter
(b) Battery
(c) Rectifier
(d) Any ofthese

5. The heating element in an electric iron   is usually made of
(a) brass.
(b) iron.
(c) nichrome.
(d) platinum.

6. Which type of magnet is used in an electric bell?
(a) Temporarymagnet
(b) Permanentmagnet.
(c) Electromagnet.
(d) Carbonmagnet

7. Which of the following gas is mainly used inside an electric bulb?
(a) Carbon dioxidegas.
(b) Hydrogengas.
(c) Inert gas.
(d) Heliumgas.

8. Type of single phase motor having highest power factor at full load is
(a) Shaded poletype
(b) Capacitorrun
(c) Capacitorstart
(d) Singlephase

9. Which of the following motors is used in hair dryer?
(a) Synchronousmotor
(b) Shaded pole inductionmotor
(c) Split phase
(d) Cage inductionmotor

10. What type of dielectric material is used in capacitorsused for fans and for power factor correction?
(a) Oil impregnated paper
(b) Vacuum
(c) Glass
(d) Mica

11. If field current is decreased in shunt dc motor, the speed of the motor
(a) Decrease
(b) Increase
(c) Remains same
(d) None of theabove

12. What creates washing action in washing machine?
(a) energy
(b) watersupply
(c) turbulence
(d) Electricity

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(Download) CBSE Class-12 Sample Paper 2019-20 : Electrical Machines

Posted: 24 Sep 2019 11:29 PM PDT

(Download) CBSE Class-12 Sample Paper 2019-20 : Electrical Machines

Class: XII
Electrical Machines-(787)
Sample Question Paper 2019-20

SECTION–A

Answer any 10 questions out of the given 12 questions:
1. Which motor cannot be started on no load?
(a) Series Motor
(b) Shunt motor
(c) Cumulative compound motor
(d) Both b and c.

2. Which of the following motor has negative speed regulation?
(a) Seriesmotor
(b) Stunt motor
(c) Cumulative compoundmotor
(d) Differential compoundmotor

3. Core of transformer is laminated to
(a) Reduce hysteresislosses
(b) Eddy currentlosses
(c) Copperlosses
(d) All of theabove

4. A transformertransforms
(a) Power factor
(b) Voltage
(c) Power
(d) Energy

5. Natural oil cooling is used in transformer upto a rating of
(a) 3000 kVA
(b) 1000 kVA
(c) 500 kVA
(d) 250 kVA

6. Soldering iron is made of wedge shape in order to......
(a) Apply high pressure atedge
(b) Retainheat
(c) Retainsolder
(d) Forge welding

7. The purpose of using flux in soldering is to.......
(a) Increase fluidity of soldermetal
(b) Feel up gaps left in a badjoint
(c) Carbonsteel
(d) Prevent oxidesforming

8. The starting torque of a capacitor start motor is
(a) zero
(b) low
(c) same as ratedtorque
(d) more than ratedtorque.

9. A universal motor is one
(a) which can run on any value of supplyvoltage
(b) which has infinitely varyingspeed
(c) which can operate on ac as well as dc voltage
(d) which can work as single phase or three phasemotor.

10. The motor used in household refrigerators is
(a) dc seriesmotor
(b) dc shuntmotor
(c) universalmotor
(d) single phase inductionmotor.

11. The direction of rotation of universal motor can be reversed by
(a) reversing the supplyterminals
(b) switching over from ac todc
(c) interchanging the brushleads
(d) any of theabove.

12. In an induction motor, rotor speed is always
(a) Less than the statorspeed
(b) More than the statorspeed
(c) Equal to the statorspeed
(d) None ofthese

Very Short Questions: (2 marks each).
Answer any 5 questions out of the given 7 questions:
13. How is speed control of dc motor achieved?
14. What are the functions of poles in dc motors?
15. What are characteristics of capacitor start motor?
16. What are different types of solder?
17. Give winding details of fractional horse power motor?
18. What are the causes of faults in ac motor?
19. List applications of voltage and current transformer.

Short Questions: (3 marks each).
Answer any 5 questions out of the given 7 questions:
20. What is single phase repulsion motor? Also write various applications of single phase motor?
21. Describe the construction of starters used to start a three-phase slip-ring induction motor.
22. Explain the construction and working principle of compound motor with a neat schematic diagram.
23. Explain testing, fault finding and repairing of dc motor.
24. Describe working principle of Shunt motor. Also give the differences between series and shunt motor.
25. Draw and explain step up and step down transformers.
26. Give construction details and winding details of shaded pole motor.

SECTION –B

Long/Essay type questions (5 marks each).
Answer any 1 question out of the given 2questions:
27. What are various soldering techniques? Explain in details.
28. Classify AC motors. Explain principle of operation, construction and characteristics of Universal Motor.

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(Download) CBSE Class-12 Sample Paper 2019-20 : Insurance

Posted: 24 Sep 2019 10:35 PM PDT

(Download) CBSE Class-12 Sample Paper 2019-20 : Insurance

Class: XII
Insurance-(786)
Sample Question Paper 2019-20

SECTION–A

Answer any 10 questions out of the given 12 questions:
1. State the term used to provide the coverage for the potential financial loss for a feeor consideration.
2. Name the documents that are accepted as age proof ininsurance.
3. „Automotive Insurance‟ is generally referred toas
4. State one point of difference between Robbery and Burglary.
5. In which year does the General Insurance business was nationalized?
6. The Insurance that provides protection against loss of freight is called Insurance.
7. Under CIFcontracts,the seller is responsible for arranging the & delivering the goods at port of destination.
I. Vehicle
II. Ferry
III. Crane
IV. Ship
8. Senior Citizen Mediclaim policy is available to a resident in India between the ge of 60 & 80 years. If renewed without break, the cover can be continued upto the age of .
9. Mediclaim Insurance was primarily introduced to cover charges.
I. Insurance
II. Hospitalization
III. Nursing
IV. Accident
10. In policy, a fixed amount is paid as compensation irrespective of theloss.
I. Valued
II. Fixed
III. Mandatory
IV. Legal
11. What is Fire Insurance?
12. For what period are fire insurance policiesissued?