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EKT 1 2015 Computer Science Question Paper



Question #1
If the centre of a circle is (-6,8) and it passes through the origin, then equation to its tangent at the origin is
Options
1) 2y=x
2) 4y=3x
3) 3y=4x
4) 3x+4y=0

Question #2
The liquid is flowing separately through each of two pipes whose diameters are in the ratio of 2:1, if the ratio of the velocities of flow in the two pipes by 1:2, then the ratio of the amounts of the liquid flowing per sec through the pipe will be
Options
1) 2:1
2) 1:1
3) 4:1
4) 1:8
Question Skipped
Question #3
If f(x) = x + | x2 - 8 | then the derivative of f( x ) at x = 3 is
Options
1) 6
2) 7
3) 8
4) -8

Question #4
Given P(A) = 1/4, P(B)=1/3 and P(AUB)= 1/2. Value of P(A/B) is
Options
1) 1/4
2) 1/3
3) 1/6
4) 1/7

Question #5
The angle between two vectors a = i+2j-k and b=2i+j+k is
Options
1) 30 deg
2) 45 deg
3) 60 deg
4) 90 deg

Question #6
Newton is unit of force. It is the unit in
Options
1) MKS system
2) CGS system
3) FPS system
4) None of these

Question #7
A Farad is defined as
Options
1) stat coulomb /volt
2) coulomb/volt
3) coulomb x volt
4) stat coulomb x volt
Question Skipped
Question #8
Permeance of a magnetic circuit corresponds to the following quantity in electrical circuit
Options
1) conductivity
2) resistivity
3) conductance
4) resistance

Question #9
Hydrometer is an instrument for measuring
Options
1) relative humidity
2) pressure of water
3) volume of liquids
4) specific gravity
Question Skipped
Question #10
Radioactivity is a property of
Options
1) atomic nuclei
2) excited electron
3) gamma rays
4) ultraviolet light
Question Skipped
Question #11
If a plane is parallel to the plane of projection, it appears
Options
1) true size
2) as a line or edge
3) foreshortened
4) as an oblique surface

Question #12
How is a J-K Flip Flop made to toggle
Options
1) J=0, K=0
2) J=1, K=0
3) J=0, K=1
4) J=1, K=1

Question #13
No. of flip-flops used in decade counter
Options
1) 3
2) 2
3) 4
4) None of the above
Question Skipped
Question #14
The decimal equivalent of the hexadecimal number E5 is
Options
1) 279
2) 229
3) 427
4) 3000

Question #15
Which part of the computer is used for calculating and comparing?
Options
1) Disk unit
2) Control unit
3) ALU
4) Modem

Question #16
CPU's processing power is measured in
Options
1) IPS
2) CIPS
3) MIPS
4) nano-seconds

Question #17
Which computer memory is volatile?
Options
1) RAM
2) ROM
3) EPROM
4) PROM

Question #18
The computer code for the interchange of information between terminals is
Options
1) ASCII
2) BCD
3) EBCDIC
4) All of these

Question #19
Which of the following is not a sequential storage device?
Options
1) Magnetic disk
2) Magnetic tape
3) Paper tape
4) All of these
Question Skipped
Question #20
The data recording area between the blank gaps on magnetic tape is called a/an:
Options
1) record
2) block
3) field
4) database
Question Skipped
Question #21
On a systems flowchart, the online manual keeping of input data is identified by using the
Options
1) online storage symbol
2) online keyboard symbol
3) keeping operation symbols
4) manual operation symbols
Question Skipped
Question #22
An example of a hierarchical data structure is
Options
1) array
2) link list
3) tree
4) ring

Question #23
Which of the following system software does the job of merging the records from two files into one?
Options
1) security software
2) utility program
3) networking software
4) documentation system

Question #24
Virtual Memory
Options
1) is a method of memory allocation by which the program is subdivided into equal portions, or pages and core is subdivided into eq
2) consists of those addresses that may be generated by a processor during execution of a computation
3) is a method of allocating processor time
4) allows multiple programs to reside in separate areas of core at the time
Question Skipped
Question #25
Which is a permanent database in the general model of compiler?
Options
1) literal Table
2) identifier Table
3) terminal Table
4) source code
Question Skipped
Question #26
Operating system functions may include
Options
1) input/output control
2) virtual storage
3) multi-programming
4) all of these

Question #27
Moving process from main memory to disk is called
Options
1) scheduling
2) caching
3) swapping
4) spooling
Question Skipped
Question #28
In which addressing mode the contents of a register specified in the instruction are first decremented, and these contents are used as the effective address of the operands?
Options
1) index addressing
2) indirect addressing
3) auto increment
4) auto decrement

Question #29
In order to allow only one process to enter its critical section, binary semaphore are initialized to
Options
1) 0
2) 1
3) 2
4) 3

Question #30
The outstanding Invoice file should be stared on a Pardon Access Storage Device if
Options
1) invoice data entry is on-line
2) payment recording is done in a batch rode
3) inquiries concerning payable are to be answered on-line
4) last record points to the first record
Question Skipped
Question #31
In SQL, which command(s) is/are used to enable/disable a database trigger?
Options
1) ALTER TRIGGER
2) ALTER DATABASE
3) ALTER TABLE
4) MODIFY TRIGGER
Question Skipped
Question #32
The modify operation is likely to be done after
Options
1) Delete
2) Look-up
3) Insert
4) all of these
Question Skipped
Question #33
Which of the following is not a logical data-base structure?
Options
1) tree
2) relational
3) network
4) chain
Question Skipped
Question #34
Which of the following tools is not used in modelling the new system?
Options
1) decision tables
2) data dictionary
3) data-flow diagrams
4) all of these
Question Skipped
Question #35
Difference between Decision-Tables and Decision Tree is (are) :
Options
1) value to end user
2) form of representation
3) one shows the logic while other shows the process
4) all of the above

Question #36
The reservation system of Indian railways is an example of
Options
1) transaction processing system
2) interactive decision support system
3) management controls system
4) expert system
Question Skipped
Question #37
The network layer, in reference to the OSI model, provide
Options
1) data link procedures that provide for the exchange of data via frames that can be sent and received
2) the interface between the X.25 network and packet mode device
3) the virtual circuit interface to packet-switched service
4) all of the above
Question Skipped
Question #38
Which of the following is an important characteristic of LAN?
Options
1) application independent interfaces
2) unlimited expansion
3) low cost access for low bandwidth channels
4) parallel transmission
Question Skipped
Question #39
Which of the following TCP/IP protocol is used for transferring electronic mail messages from one machine to another?
Options
1) FTP
2) SNMP
3) SMTP
4) RPC

Question #40
The slowest transmission speeds are those of
Options
1) twisted-pair wire
2) coaxial cable
3) fibre-optic cable
4) microwaves

Question #41
How many digits of the Network User Address are known as the DNIC (Data Network Identification Code)?
Options
1) first three
2) first four
3) first five
4) first seven
Question Skipped
Question #42
The most flexibility in how devices are wired together is provided by
Options
1) bus networks
2) ring networks
3) star networks
4) T-switched networks
Question Skipped
Question #43
An FM signal contains intelligence in
Options
1) it's frequency variations
2) it's amplitude variations
3) both amplitude and frequency variations
4) none of these

Question #44
In PCM system
Options
1) a large bandwidth is required
2) the biggest disadvantage is its incompatibility with TDM
3) companding is used to overcome quantising noise
4) none of the above
Question Skipped
Question #45
The all-day efficiency of a transformer depends on
Options
1) its copper loss
2) its iron loss
3) both (a) & (b)
4) None of these
Question Skipped
Question #46
Slip rings for induction motor are made of
Options
1) copper
2) aluminium
3) carbon
4) phosphor bronze
Question Skipped
Question #47
One of the characteristic of single phase motor is that it
Options
1) is self-starting
2) is not self-starting
3) requires only one winding
4) can rotate in one direction only
Question Skipped
Question #48
If the input to a differentiating ckt is saw -tooth wave then output will be _______ wave
Options
1) Square
2) Rectangular
3) Triangular
4) Saw-tooth
Question Skipped
Question #49
Which gate acts as universal gate?
Options
1) AND
2) NAND
3) OR
4) EX-OR

Question #50
A 32 bit microprocessor has word length equal to
Options
1) 1 byte
2) 2 byte
3) 4 byte
4) 8 byte


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