Tuesday, August 4, 2015


If you are a tech person and would go browse over the internet you will see the never ending leaked specifications, renders and cases for the Samsung Galaxy Note 5. This Phone is one of the most searched topic on the internet. Such a hit and it is not even launched.
This upcoming device from the digital world giant is believed to share the same design concept as the Galaxy S6 and the Galaxy S6 Edge. Also according to the latest news and rumours the Galaxy Note 5 will have a metal chasis which will be very durable.
This particular handset is expected to feature tapered edges on the rear along both the sides of the device. This feature of the design is a replica of the Galaxy S6 Edge design. Having this kind of a design, the tapered edges results to a non-existent grip of the phone making it vulnerable to slip off the hand and obviously falling to the ground.
Even though this phone might have a metal chasis it might withstand a fall or 2. This metal body would crack too after a few falls which is bound to happen if the design stays the same (as per the rumours, nothing is official yet).
You would probably require a good phone case for the phone for it to be safe and working. You are putting in a lot of money to get this handset so obviously you would want to keep it safe. There are plenty of cases which Samsung provides for its handsets. Finding cases for Samsung is the easiest. It is easier than finding cases for any other phone.
There is a wide range for the phone cases starting real cheap rising up a great deal. Fancy glam cases are also mostly available for Samsung smartphones and probably would be available for this too.

Wednesday, February 27, 2013

Human Resource Management Skill

Human Resource is the backbone of any organization. They are the moving ambassadors of the company as well as the reason for the company to produce better results at a competitive sphere. So, it can undoubtedly be considered that success of the organization to a large extent depend on the skill and abilities of the employees and the quality of the output they produce. The human resource department is particularly involved in this concern with the intention to recruit talented staffs for company benefits. All these make human resource one of the most demanding subject areas for the students of MBA. The course aimed in making the students a manager who can control the employees and take care of their requirements.
Human resource management guides the students to master the skill of handling manpower through practical and theoretical knowledge. It covers a number of tasks which include searching eligible candidates, fixing dates for interviews, knowing the skills they have, checking the background and gathering other such information, implementing welfare policies for the employees, counseling employees on their career, etc. Resource development is another task of a HR which monitors the work and progress of a worker. It includes special training,assessment and even studying performance for providing appraisal, promotion and other such amenities.Sorting the salaries of the employees, tracking the leave applications, giving bonuses, etc. are also the tasks of HR.
Analytical and quantitative skills are some of the other key requirements of HR. They should have a hold over communication and have an ability to make the employees understand processes and procedures in an organization. They should even know the norms of local and federal legislation. Even HR must have the skill to translate the numerical data into comprehensible English. The MBA colleges in Kolkata and elsewhere put an emphasis on these aspects because without these qualities, a HR cannot deal or communicate with the employees coming from different background.
Whether it is about the business environment or working procedures, HR needs to have an eye on everything and competency level should be excellent. They must ensure that workers would be provided with safety at work and every other requirement at office shall be maintained. With rising number of businesses, the necessity of human resource management skill is increasing day by day.
Being a service based economy the value of HR is in high demand. Therefore, managing the resources of business comes as the first priority. They need to chalk out strategies for easy functioning that can satisfy the workers. In other words, it can even be stated that HR has the responsibility to maintain integrity and stability in the working environment.
Unquestionably, this is a challenging task where the HR department balances between the organizational goal as well as the needs of the workers. They have to make choices while implementing strategies that are beneficial for the organization and at the same time provide the workers the opportunities that they deserve.
Author Bio: Sneha Ghosh shares vital information about MBA colleges in Kolkata. Her readers can even get to know about the important aspects of MBA.

Monday, March 29, 2010

Questiom of TELECOMMUNICATION SYSTEMS (sem-5) -2009

                               TELECOMMUNICATON SYSTEM

1. Choose the correct Alternative.
 (1) In modem uploading data rates always less then downloading data rates because
   (i) SNR (20db)is very low in communication channel.
   (ii) quantisation noise limits the channel data rates
   (iii) during uploading extra control bits are added with the data
   (iv) none of these.
 (2) the voice signal BW is 4 KHz and the Nyquist sampling rate is 8 KHz and time multiplexed space swiching 30 channel is to be multiplexed. the TS is
   (i) 4.16 micro sec (ii) 8.33 micro sec. (iii)125 micro sec (iv) none of these
 (3) MTTR means
   (i) Mean time to repair (ii) Maximum time to repair
   (ii) Most time to repair (iv) mean time to represent.
 (4) Blocking probability is
    (i) call congestion (ii) time congestion (iii) both (i) and (ii). (iv)none of these
 (5) GOS in india is
   (i)0.002 (ii) 0.02 (iii) 0.2 (iv) 2.
  (6) ISDN B-channel carries data and service at
    (i) 16 kbps (ii) 32 kbps (iii) 64 kbps (iv) 1.544 Mbps
 (7) Loudspeaker is an end instrument of
   (i)transmitter side (ii) receiver side (iii) both (iv) none of these
 (8) CHILL is a
    (i) CCITT language (ii) IEEE language (iii) IEE language (iv) ANSI language.
 (9) Attenuation can be reduced in subscriber loop by using
   (i) higher diameter in copper wire (ii) series of inductance in line
   (iii) lower diameter in copper wire (iv) serise of capacitance in line.
 (10) SDL stands for
    (i) software description language (ii) specification derived language
    (iii) specification description language (iv) sofeware derive language.
(11) A subscriber makes 3 calls of 3 mints , 4 mints, and 2 mints duaration in one hour period Calculate the subscriber traffic in Erlangs.
   (i)0.15 E (ii) 0.2E (iii)0.5E (iv) 0.7 E
 (12) In a  Strowger system the high value of CCI indicates
   (i) good design (ii) poor design (iii) no impact on design (d) none of these
                       GROUP - B
 Answer any three
 2 (a) What do you mean by point to point communication ?
   (b) Explain the disadvantages of this system
   (c) If the number of node in point to point communication is 770 , find out the total number of links required for total connevtivity.
3. (a) Show the GOS =  p b  , explain the meaning of the symbol.
   (b) Over a 20 minute observation interval, 40 subscribers initiate calls. Total duration of the calls is 4800 sec . calculate the load offered to the network by the sescribers and the average subscriber traffic.
4. What is call completion rate (CCR) ? 10000 subscribers are connected to an exchange , if the exchange is designed to achieve a CCR of 0.8 when the busy hour calling rate is 4.8 , calculate BHCA of the exchange.
5. What is BORSCHT function ? Why is this important in electronics exchange.
6. How many type of transmission medi are used in telecommunication ? What are the advantages of twisted pair cable over parallel wire cable ? what is step index fiber and graded index fiber?
                    GROUP -C
Answer any there
7 (a) assuming simultaneously forward and backward wave propagation in a transmission line. Derive the follwing general equation for the line,
    V=V1cos hrd +I1Z0sinhrd,
    I= I1coshrd+I1/Z0 sinhrd,
   Where V and I are the voltage and current respectively at a distance from a load end of the transmission line having characteristic independence Z0 and propagation constant r. the load end voltage and current V1 and I1respectively.
 (b) A loseless line has a characteristics impedance of 75 ohm and is terminated in a load of 300 ohms . find out the reflection cofficient and VSWR in the line.
  (c) explain the principle of DTMF dialing.
8. (a) what ia ISDN? Explain the transmission channel in ISDN?
   (b) what are the drawbacks of ISDN? how does B-ISDN overcome from this?
  (C) Write function grouping and reference point in ISDN.
9. (a) Explain centralized SPC and different modes of it.
(b) Explain distributed SPC and explain the different types of leve processing in it.
 (c) In the load sharing configuration of centralised SPC MTBF =2000 hours and MTTR =4 hours calculate the unavailability for single and dual processor system.
(d) Explain time division space switching.
10. What is DTE and DCE? Explain how data communication takes place between DTE and DCE using RS @#@C serial interface. why is conventional telephone modem down stream data rate 56 kbps? A telephone line has a bandwidth of 3000 Hz and SNR is 34 Db calculate the data rate of this line.
11. Write short notes on any three of the following.
(A) Packet switching
(b) ISDN systems interface.
 (c) Difference between circiut switch , packet swith and message swith
(d) Modems and standards
(e) facsimile transmission.

Sunday, March 28, 2010


1. An impulse turbine
(A) Makes use of a draft tube
(B) Always operates submerged
(C) Converts the pressure head into velocity
head through the vanes
(D) Is most suited for low head installations
2. Power required to drive a centrifugal
pump is directly proportional to
(A) Diameter of its impeller
(B) Square of diameter of its impeller
(C) Cube of diameter of its impeller
(D) Fourth power of diameter of its
3. The locus of the common point on the
two meshing spur gears is known as
(A) Addendum circle
(B) Duodenum circle
(C) Pitch circle
(D) Base circle
4. When there is a reduction in amplitude
over every cycle of vibration then the body
is said to have
(A) Free vibration
(B) Forced vibration
(C) Damped vibration
(D) Natural vibration
5. For machining at high speed the tool
material should have
(A) Wear resistance
(B) Red hardness
(C) Toughness
(D) All of these
6. MIG welding is
(A) A gas welding process
(B) An electric resistance welding process
(C) A electric resistance welding process
(D) A forge welding process involving high
temperatures and low pressures
7. The ability of sand to permit the metal to
shrink when it solidifies is known is
(A) Plasticity (B) Permeability
(C) Collapsibility (D) Cohesiveness
8. Rivets are generally specified by
(A) Overall length
(B) Shank diameter
(C) Thickness of plates to be jointed
(D) Diameter of head
9. Which of the following is steady flow
(A) Reciprocating compressor
(B) Centrifugal compressor
(C) Voot blower
(D) Vane blower
10. A closed cycle gas turbine works on
(A) Carnot cycle (B) Rankine cycle
(C) Brayton cycle (D) Joule cycle
11. Thermal conductivity of solid metals
(A) Decreases with rise in temperature
(B) Does not vary with temperature
(C) Increases with rise in temperature
(D) Remains constant with rise in
12. During adiabatic saturation process, air
property which remains constant, is known
(A) Wet bulb temperature
(B) Dry bulb temperature
(C) Relative humidity
(D) Specific humidity
13. Bell-Coleman cycle as applied to
refrigeration operates
(A) On open air system
(B) On vapour compression system
(C) On vapour absorption system
(D) On none of these
14. The gears in which axes of the shaft
connected by them, intersect, are known as
(A) Spur gears (B) Bevel gears
(C) Spiral gears (D) Gear train
15. Shot peening
(A) Is done at re-crystallization temperature
(B) Changes the crystalline structure at
(C) Improves the fatigue life of small parts
(D) Refines the grain structure
16. In a bomb calorimeter the heat released
by the fuel is absorbed by
(A) Atmospheric air
(B) Water
(C) Metal container
(D) Bomb, water and metal container
17. Nitriding is done
(A) On low carbon steels only
(B) To impart blue colour to steels
(C) To improve machinability
(D) To increase surface hardness
18. The extent of cold work that a metal can
withstand depends on
(A) Purity of metal
(B) Carbon percentage
(C) Ductility
(D) Room temperature
19. Which engine has the highest air fuel
(A) Petrol engine (B) Gas engine
(C) Diesel engine (D) Gas turbine
20. Annealing of steels is done to
(A) Remove internal stresses
(B) Produce soft core under hard surface
(C) Produce hard core under soft surface
(D) Introduce capacity to withstand shocks


The model question paper only offers a broad overview and does not purport to represent either
the syllabus or the pattern of questions that would appear in the Engineering Knowledge Test
1. In a communication system, noise is
most likely to get into the system
(A) at the transmitter
(B) in the channel
(C) in the information source
(D) at the destination
2. When modulation frequency is doubled,
the modulation index is halved, and the
modulating voltage remains constant, the
modulation system is
(A) amplitude modulation
(B) phase modulation
(C) frequency modulation
(D) angle modulation
3. Impedance inversion may be obtained
(A) a short – circuited stub
(B) an open – circuited stub
(C) a quarter – wave line
(D) a half – wave line
4. HIGH frequency waves are
(A) observed by the F2 layer
(B) reflected by D layer
(C) capable of use for long-distance
communication on the moon
(D) affected by the solar cycle
5. Which one of the following terms does
not apply to the Yagi-uda array
(A) Good band width
(B) Parasitic elements
(C) Folded diploe
(D) High gain
6. A duplexer is used
(A) to couple two different antennae to a
transmitter without mutual interference
(B) to allow one antenna to be used for
reception or transmission without mutual
(C) to prevent interference between two
antennae when they are connected to
(D) to increase the speed of the pulses in
pulsed radar
7. Indicate which of the following system is
(A) Pulse – Position modulation
(B) Pulse – Code modulation
(C) Pulse – Width modulation
(D) Pulse – Frequency modulation
8. A forward error correcting code corrects
errors only
(A) requiring partial retransmission of the
(B) requiring retransmission of entire signal
(C) using parity to correct to errors in all
(D) requiring no part of the signal to be
9. A typical signal strength received from a
geosynchronous communication satellite is
of the order of
(A) a few milli watts
(B) kilo watts (C) watts
(D) few pico watts
10. Telephone traffic is measured
(A) with echo cancellers
(B) by the relative congestion
(C) in terms of the grade of service
(D) in erlangs
11. Positive logic in a logic circuit is one in
(A) logic 0 and 1 are represented by 0 and
positive voltage respectively
(B) logic 0 and 1 are represented by
negative and positive voltages respectively
(C) logic 0 voltage level in higher than
logic 1 voltage level
(D) logic 0 voltage level is lower than logic
1 voltage level
12. A half-adder can be made from
(A) two NAND gates
(B) a NOT gate and an OR gate
(C) an AND gate and an OR gate
(D) an AND gate and an X-OR gate
13. Which of the following devices has its
characteristics very close to that of an ideal
current source.
(A) Field effect transistor
(B) Transistor in common bas mode
(C) Zener diode
14. The main use of a common base
transistor amplifier is
(A) as voltage amplifier
(B) current amplifier
(C) for matching a high source impedance
to a low load impedance
(D) for rectification of a.c. signal
15. A class-B amplifier is biased
(A) Just at cut-off
(B) nearly twice cut-off
(C) at mid point of load line
(D) so that IB equals jut IC
16. If the peak transmitted power in a radar
system is increased by a factor of 16, the
maximum range will be increased by a
factor of
(A) 2 (B) 4 (C) 8 (D) 16
17. A high PRF will (indicate the false
(A) make the returned echoes easier to
distinguish from noise
(B) make target tracking easier with conical
(C) increase the maximum range
(D) have no effect of the range resolution
18. A solution to the “blind speed” problem
in a radar system is to
(A) change the Doppler frequency
(B) vary the PRF
(C) use mono pulse
(D) use MTI
19. The number of active picture elements
in a television image depends on
(A) fly back time
(B) CRT screen size
(C) received band width
(D) FB ratio of receiver antenna
20. In a colour TV, the three primary
colours are
(A) red, orange and blue
(B) red, blue and green
(C) red, green and yellow
(D) red, orange and green