Ques-When did arch rivals IBM and Apple Computers Inc. decide to join hands?
(A) 1978
(B) 1984
(C) 1990
(D) 1991

Ques-Code can be optimized at
(A) Source from user
(B) Target code
(C) Intermediate code
(D) All of the above
Answer A

Ques-For the number A[15:0] = 0110110010001111,  A[14:13] is ______  A[3:2].
(A) less than
(B) greater than
(C) the same as
(D) cannot be determined
Answer: C

Ques-The _______ protocol allows the administrator to assign a cost, called the metric, to each route.
(A) OSPF
(B) RIP
(C) BGP
(D) none of the above

 Ques-A _______ is a data communication system within a building, plant, or campus, or between nearby buildings.
(A) MAN
(B) LAN
(C) WAN
(D) none of the above

Ques-Manager's salary details are hidden from the employee. This is ?
(A) Conceptual level data hiding
(B) Physical level data hiding
(C) External level hiding
(D) None of above

(A)Ques-How many  components in relational model:
(B)2
(C)3
(D)4

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Bsnl Preparation Page 6

4. Instruments and Measurements :Specification of instruments – accuracy, precision, sensitivity, resolution range,Errors in measurements and loading effect, principles of voltage, current and resistance measurements, Transducers, measurement of displacement & strain, forces & torque measuring devices, pressure measuring devices, flow measuring devices, power control devices & circuits. Types of AC Milli voltmeters-Amplifier rectifier and rectifier amplifier, Block diagram explanation of a basic CRO and a triggered sweep oscilloscope, front panel controls, impedance Bridges and Q- Meters.Principles of working and specifications of logic probes, signature analyzer and logic analyzer, signal generator, distortion factor meter, spectrum analyzer
Sample Questions
Ques: In the zero signal conditions, a transistor sees..?
1) a.c
2) a.c and d.c
3) d.c
4) none of above

Ques: Voltmeter is an instrument used for ?
1) Measuring  electrical potential difference
2) Measuring Kinetic Energy
3) Measuring Current
4) Measuring Resistance
Ans is 1) Measuring  electrical potential difference

Ques: Weber is the unit of
1) Magnetic moment
2)  Magnetic induction
3)  Magnetic field
4)  Magnetic flux

Important: Block diagram explanation of a basic CRO


Ques: Signature Analyzer is used for ?
1) Doing Signature
2) Fault Finding
3) Proving Data
4) none of these
Ans is: Signature Analyzer is used for fault finding electronics circuits with a logic system such as a microprocessor board

Useful Books for Exam Preparation We recommend you to purchase these books for your preparation besides these sample questions as these sample questions won't be enough to qualify these exams.
These are some of the best books we found
  
5. Control Systems ; Basic elements of control system, open and closed loop system, concept of feedback Block diagram of con troll system. Time lag, hysterisis, linearity concepts, Self- regulating and non- self regulating control systems. Transfer function of simple control components, single feedback configuration. Time response of systems. Stability Analysis characteristics equation, Routh’s table, Nyquist criterion, Relative stability, phase margin and gain margin.Routh Hurwitz criterion, root locus techniques, Bode plot, power plot, Gain margin and phase margin.

Ques: In the d.c equivalent circuit of a transistor amplifier , the capacitor are considerds.....
a) short
b) open
c) open and short
d) all of above

6. Microprocessors : Typical organization of a microcomputer system & functions of its various blocks, Architecture of a Microprocessors, Memories and I/O Interfacing, Brief  idea of M/C assembly languages, Machines & Mnemonic codes, instruction
format and Addressing mode concept of instruction set, programming exercises in assembly language, concept of interrupt, Data transfer techniques – sync data transfer, interrupt driven data transfer, DMA serial output data, serial input data.

Do you know ?
Data synchronization is the process of establishing consistency among data from a source to a target data storage and vice versa

Interrupt driven data transfer is used for relatively slow I/O devices, such as character printer, or an A/D converter.

Ques: What is SIM?
a) Select Interrupt Mask
b) Sorting Interrupt Mask
c) Set Interrupt Mask.

7. Computer and its working, types of computers, familiarization with DOS and Windows- concept of file, directory, folder, Number Systems, Data representation,programming Elements of a high level programming language, PASCAL, C:Use of basic data structures, Fundamentals of computer architecture, Processor design, Control unit design, memory organization . I/O system organization Microprocessors –microprocessor architecture, instruction set and simple assembly level programming,

Do you know ?
Computers are basically of three types: Analog, digital & Hybrid
Digital Computer are of four types
1.Super Computers: A supercomputer is focused on performing tasks involving intense numerical calculations such as weather forecasting, fluid dynamics, nuclear simulations, theoretical astrophysics, and complex scientific computations

2.Mainframe Computers: The term mainframe computer was created to distinguish the traditional, large, institutional computer intended to service multiple users from the smaller, single user machines.

3.Mini Computers: A minicomputer (colloquially, mini) is a class of multi-user computers that lies in the middle range of the computing spectrum, in between the smallest multi-user systems (mainframe computers) and the largest single-user systems (microcomputers or personal computers).

4.Micro Computers: A microcomputer is a small, relatively inexpensive computer with a microprocessor as its central processing unit (CPU). It includes a microprocessor, memory, and input/output (I/O) facilities.

Ques: Pascal language was developed by?
A) Blaise Pascal
B) Niklaus Wirth
C) Anders Hejlsberg
D) None of these
Ans is B) Niklaus Wirth
Pascal, named in honor of the French mathematician and philosopher Blaise Pascal, was developed by Niklaus Wirth.

Microprocessors based system design, typical examples. Personal computers and their typical uses, data communication principles, types and working principles of  modems, Net work principles, OSI model, functions of data link layer and network layer, networking components, communications protocolsa–X.25, TCP/IP Database Management System – Basic concepts, entity relationship model,
relational model, DBMS based on relational model.

Sample Questions
Ques-An input /output device at which data enters or leaves a computer system is
(A) Keyboard
(B) Terminal
(C) Printer
(D) Plotter
Answer: B

Ques-A factor in the selection of a source language is
(A) programmer skill
(B) language availability
(C) program compatibility with other software
(D) all of the above

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Bsnl Preparation Page 5

Ques-What are the types of lightning arrestors
(A) horn gap
(B) rod gap
(C) expulsion type
(D) all of the above

Ques-In a thyristor, ratio of latching current to holding current is
(A) 0.4
(B) 1.0
(C) 2.5
(D) None of these

Ques-The function of air conditioning system is

(A) Cooling and humidification            
(B) Cooling and dehumidification
(C) Heating and humidification            
(D) Heating and dehumidification

2. Communication : Modulation and demodulation – principles and operation of various types of AM,
FM and PM modulators/ demodulators; pulse modulation – TDM, PAM, PPM, PWM, Multiplexing, principles and applications of PCM.
Introduction of Basic block diagram of digital and data communication systems, coding error detection and correction techniques, Digital Modulation Techniques – ASK, ICW, FSK, PSK, Characteristics / working of data transmission circuits,
UART, USART, Modems, Protocols and their functions, brief idea of ISDN interfaces, local areas Network, Carrier Telephony – Features of carrier telephone system.Microwave Engineering : Microwave Devices, Wave – guides, Microwave Components, Microwave Antennas, Microwave Communication system- Block diagram & working principles of microwave communication link.

Sample Questions

Ques-Which of the following is not a transmission medium?
(A) telephone lines
(B)coaxial cables
(C) modem
(D) microwave systems

Ques-_____ is a digital process that allows several connections to share the high bandwidth of a link.

A)           FDM
B)           TDM
C)           WDM
D)           None of the above

Ques-Adding 1 and 1 in modulo-2 arithmetic results in _________.
(A)  1
(B)  2
(C)  0
(D)  None of the above

Ques-In case of open circuit transmission lines the reflection coefficient is
(A) 1
(B) 0.5
(C) -1
(D) Zero

3. Network, Filters and Transmission Lines : Two port network, Attenuators, Filters, Transmission Lines and their applications characteristic impedance of line, concept of reflection and standing waves on a transmission line, Transmission line equation, Principles of impedance matching Bandwidth consideration of a transmission line

Sample Questions

.Ques: Radiowaves of constant amplitude can be generated with
(a) FET
(b) filter
(c) rectifier
(d) oscillator
Ans is d

Ques: The current gain for a transistor working as common-base amplifier is 0.96. If the emitter current is 7.2 mA, then the base current is
(a)0.29mA
(b)0.35mA
(c)0.39 mA
(d) 0.43 mA
Ans is d

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Bsnl Preparation Page 4

Ques-A sinusoidal oscillation from an amplifier requires:

(A) loop gain equal to unity

(B) phase shift around loop equal to 0 degrees

(C) both a and b, but at just one frequency

(D) none of the above

Ans C

Ques-The ICregulator that can be used as switching regulator is

(A) IC722

(B) IC7805

(C) LM317

(D) none

5. Digital Techniques : Applications and advantages of digital systems, number system (binary and hexadecimal) Logic Gates; Logic Simplication, Codes and Parity, Arithmetic circuits, Decoders, Display Devices and Associated Circuits,Multiplexers and De- multiplexers, Latches and Flip Flops, Counters, Shift Registers, Memories, A/D and D/A converters.
Sample Questions
Ques-A single transistor can be used to build which of the following digital logic gates?
(A). AND gates
(B). OR gates
(C). NOT gates
(D). NAND gates

Ques-Which of the following is Universal flip-flop
(A) JK flip-flop
(B) RS flip-flop
(C) Master slave flip-flop
(D) D flip-flop.

Ques-An add/drop multiplexer is a ______ device.
(A) one-layer
(B) two-layer
(C) three-layer
(D) four-layer

Useful Books for Exam Preparation We recommend you to purchase these books for your preparation besides these sample questions as these sample questions won't be enough to qualify these exams.
These are some of the best books we found
  

SPECIALIZATION – 90 MARKS
1. Electrical : 3 phases vs. single – phase supply, star Delta connections, relation between phase & line voltage power factor and their measurements, construction and principles of working of various types of electrical measuring instruments . All types of motor andgenerator- AC &DC transformers starters, rectifiers, inverters, battery charges,batteries, servo and stepper motors, contactor control circuits, switch gear, relays,protection devices & schemes, substation, protective relaying, circuits breaker,generator protection, transformer protection, feeder & lightening protection, feeder & bus bar protection, lightning arrestor, earthing, voltage stabilizer & regulators, power control devices & circuits, phase controlled rectifiers, inverters, choppers dual converters, cycloconverters, power electronics application in control of drivers, refrigeration & air – conditioning .


Sample Questions

Ques-The positive sequence reactance will be equal to negative sequence if the equipment is -
(A) Transformer & transmission lines
(B) generator
(C) motor
(D) none of these

Ques-A rectifier is a
(A) Bilateral device
(B) Linear device
(C) Non-linear device
(D) Passive device.

Ques-As the force on contact is increased, the contact resistance will
(A) increase linearly
(B) increase exponentially
(C) remain unaltered
(D) decrease.

Ques-Earthing conductivity is affected by:
(Q) Moisture content in the soil
(B) Chemical composition
(C) Concentration of salts in the soil
(D) All the above

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Bsnl Preparation Page 3

Ques: Resistivity of a wire depends on
(A) length
(B) material
(C) cross section area
(D) none of the above.
Ans is B

Ques: The equivalent resistance at the points X1 and X2 in the circuit shown below

A) 60 ohm
B) 40ohm
C) 80 ohm
D) 20ohm
Ans is B

Ques: Ampere second could be the unit of
(A) power
(B) conductance
(C) energy
(D) charge
Ans is D

Ques An electric current of 5 A is same as
(A) 5 J / C
(B) 5 V / C
(C) 5 C / sec
(D) 5 w / sec
Ans is C

Ques: A circuit contains two un-equal resistances in parallel
(A) current is same in both
(B) large current flows in larger resistor
(C) potential difference across each is same
(D) smaller resistance has smaller conductance.
Ans is C

Useful Books for Exam Preparation We recommend you to purchase these books for your preparation besides these sample questions as these sample questions won't be enough to qualify these exams.
These are some of the best books we found
  

4. Electronics Devices and Circuits: Classification of materials in to conductor,semi conductor, Insulator etc, electrical properties, magnetic materials, various types of relays, switches and connectors, Conventional representation of electric and electronic circuits elements. Active and passive components, semi conductor physics, Semiconductor Diode, Bipolar transistor & their circuits, Transistor Biasing Stabilization of operating point; Single stage transistor amplifier, field effect transistor, Mosfet circuits applications.Multistage Transistor Amplifier, Transistor Audio Power Amplifiers, Feedback in Amplifier, Sinusoidal Oscillators. Tuned Voltage Amplifiers, Opto Electronics Devices and their applications, Operational Amplifier, Wave shaping and switching circuits. Block diagram of I.C Timer (such as 555) and its working Motivation circuits,Time Base circuits, Thyristory and UJT, Regulated Power Supply.

Sample Question
Ques-n-type semiconductors are:
(A) Negatively charged
(B) Produced when Indium is added as an impurity to Germanium
(C) Produced when phosphorous is added as an impurity to silicon
(D) None of the above

Ques- In an intrinsic semiconductor, the mobility of electrons in the conduction band is:
(A )Less than the mobility of holes in the valence band
(B) Zero
(C) Greater than the mobility of holes in the valence band
(D) None of the above

Ques-In a negative feedback amplifier, current sampling:

(A) Tends to increase the output resistance

(B) Tends to decrease the output resistance 

(C) Does not alter the output resistance 

(D) Produces the same effect on input resistance as voltage sampling

Ques-In a feedback amplifier, sensitivity D is equal to:
 (A) Aβ
 (B) 1 – Aβ
 (C) 1 + Aβ
 (D) 1/(Aβ + 1)

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Bsnl Preparation Page 2

2. Applied Physics : Measurement Units and Dimension; Waves, Acoustics,Ultrasonic, Light Laser and its Application, Atomic Structure and Energy Levels.

Sample Questions
Questions on Measurement Units and Dimension:
Which of the following pairs is wrong. [AFMC 2003]
a)Pressure-Baromter
b) Temperature-Thermometer
c) Relative density-Pyrometer
d) Earthquake-Seismograph
Ans is: Relative density-Pyrometer

Ques: In which of the following systems of unit, is the unit of magnetic flux .
a) CGS
b) SI
c) MKS
d) None of these
Ans is Si

Ques: Universal time is based on 
a) Rotation of the earth on its axis
b) Vibrations of cesium atom
c) Earth's orbital motion around the earth
d) Oscillations of quartz crystal

Ques: Which of the following affects the absorption of sound in a room:
a)the material used for wall surfaces.
b)the number of people in the audience.
c)the volume of air in the room.
d)all of the above.

Ques: If two pure tone sound waves in air differ by an octave, 
a)one has twice the frequency of the other.
b)one has twice the wavelength of the other.
c)they differ by 1200 cents.
d)all of the above.

Ques: The lowest few partials of a tone are 220 Hz, 440 Hz, 660 Hz, and 880 Hz.  Which of the following is true?  

a)The third harmonic is 660 Hz.

b)The fourth overtone is 880 Hz.

c)The fundamental frequency is 110 Hz.

d)All of the above.

3. Basic Electricity : Electrostatics, Coulomb’s law, Electric field, Gauss’s theorem,concept of potential difference; concept of capacitance and capacitors, Ohm’s law, power and energy, Kirchoffs voltage, current laws and their applications in simple DC circuits, Basic Magnetism, Electro Magnetism, Electromagnetic Induction, Concept of alternating voltage & current Cells and Batteries, Voltage and Current Sources. Thevenin’s theorem, Norton’s theorem and their applications.

Basic diagram showing Current, Voltage & Resistance

V=IR

Do you know?
Coulomb's law is used for describing the electrostatic interaction between electrically charged particles.
Gauss's law, also known as Gauss's flux theorem, is a law relating the distribution of electric charge to the resulting electric field.
Gauss's law states that
The net outward normal electric flux through any closed surface is proportional to the total electric charge enclosed within that closed surface.
Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference across the two points
Kirchoffs Laws: Study from Wikipedia about these topics
There are two laws
Kirchhoff's current law (KCL) & Kirchhoff's voltage law (KVL)
Law I: Kirchhoff's first law, Kirchhoff's point rule

This law explains than the sum of all the currents meeting at any point is zero.In the above Diagram the Sum of all the currents i1 + i2 + i3 + i4 = 0  or  i1 + i2 =  i3 + i4



Law II: Kirchhoff's second law, Kirchhoff's loop (or mesh) rule

Here, n is the total number of voltages measured. The voltages may also be complex:

Sample Question
Ques: What is a series circuit?
a) a circuit containing two or more resistors
b) a circuit with only one current path
c) a circuit containing two or more voltages that are equal in val
d) none of these

Ques: Which of the following statements is true?
a) Kirchhoff's voltage law states that the algebraic sum of the voltages around a closed loop must equal zero.
b) Kirchhoff's voltage law allows us to calculate the voltage across a given resistor without knowing the value of the source voltage.
c) Kirchhoff's voltage law states that the algebraic sum of all of the voltages around a closed loop must equal the source voltage.
d) None of these

Ques: Which of the following statements is true?
a) Source resistance mainly affects low-current loads.
b) Source resistance mainly affects low-resistance loads.
c) Source resistance mainly affects high-resistance loads.

d) None of these

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KBC IDEA Pass Question of 11th June 2013 with answer, Kaun Banega Crorepati Idea Users Question of the day

KBC Question: Question: Which of these cricketers is popular with the title "Sir" on social networking sites?

A) Virendra Sehwag
B) Ravindra Jadeja
C) Suresh Raina
D) Harbhajan Singh

Answer B) Ravindra Jadeja

Description

Ravindra Jadeja on Twitter and Facebook, he is jokingly referred to as Sir Ravindra Jadeja since an online joke calling him the same went viral

How to Apply

For IDEA Subscribers
IVR
User has to DIAL:
55456 01 if the answer is Option A
55456 02 if the answer is Option B
55456 03 if the answer is Option C
55456 04 if the answer is Option D

* Up to Rs.4 per minute
*Available only for Idea Mobile Subscribers. T&C on www.kbcsony.com

SMS
User has to SMS:
KBC<space>Answer(A/B/C/D) to 554567
Eg. KBC A
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*Available only for Idea Mobile Subscribers. T&C on www.kbcsony.com
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Which of these cricketers is popular with the title "Sir" on social networking sites? A) Virendra Sehwag B) Ravindra Jadeja C) Suresh Raina D) Harbhajan Singh

KBC Question: Which of these cricketers is popular with the title "Sir" on social networking sites?
A) Virendra Sehwag
B) Ravindra Jadeja
C) Suresh Raina
D) Harbhajan Singh

Description
Social networking sites including Twitter, Facebook etc

Click here for answer