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Recruitment of Head Constable (Radio Operator) (HC—RO), Head Constable (Fitter) (HC—Fitter), Assistant Sub Inspector (Radio Mechanic) (ASI—RM) in Border Security Force (BSF).

Indian Male belonging to General, Other Backward Classes OBC, Scheduled Castes, and Schedule Tribe can apply for the recruitment in the given posts:

- Head Constable (Radio Operator) (HC—RO),
- Head Constable (Fitter) (HC—Fitter),
- Assistant Sub Inspector (Radio Mechanic) (ASI—RM).

Many candidates might fail to understand the nature of these jobs. Since people, say aspirant, might take these jobs in the category of General Duty. But the truth is that, it is not true. Personnel of these rank become the part and parcel of the communication wing of BSF.

## Age Limit

For BSF Head Constable (Radio Operator) (HC—RO)/BSF Head Constable (Fitter) (HC—Fitter), the age of the aspirant should not be below

BSF Assistant Sub Inspector (Radio Mechanic) (ASI—RM), the age of the candidates should not be below

**.**__18 years__BSF Assistant Sub Inspector (Radio Mechanic) (ASI—RM), the age of the candidates should not be below

**.**__18 years or over 25 years__## Written Exam Syllabus

BSF recruitment test for the post of Head Constable (Radio Operator and Fitter) and Assistant Sub Inspector (RM) include:

Books

- Part I — Physics [60 marks]
- Part II — Mathematics [60 marks]
- Part III — Chemistry [30 marks]
- Part IV — English and GK [50 marks]

### Topic of BSF ASI RM Exam Syllabus

Here is the topicwise exam syllabus of BSF Assistant Sub Inspector Radio Mechanic ASI RM post.

#### PHYSICS (60 marks)

__Physical world and measurement__Units of measurement, systems of units, SI units & fundamental and derived units.

__Kinematics__Distance and displacement, velocity, acceleration, Motion in a straight line Uniform and non- uniform motion, average speed and instantaneous velocity, Uniformly accelerated motion, velocity-time, position-time graphs, Scalar and vector quantities, position and displacement vectors, general

vectors Cases of uniform velocity and uniform acceleration-projectile, Uniform circular motion.

__Laws of motion__Force and motion, Newton’s first law of motion; momentum and Newton’s second law of motion; inertia of a body, inertia and mass, momentum, elementary idea of conservation of momentum, action and reaction forces,Laws of friction ,Centripetal and centrifugal force.

__Work, energy and power__Work done by a constant force and a variable force; kinetic energy, power. Conservative forces: conservation of mechanical energy (kinetic and potential energies)/ non-conservative forces: elastic and inelastic collisions in one and two dimensions. Elasticity – types.

__Motion of system of particles and rigid body__Conversation and centre of mass motion, Torque, angular momentum ,Moment of inertia, radius of gyration. Statement of parallel and perpendicular axis theorems and their applications.

__Gravitation__The universal law of gravitation, Acceleration due to gravity and its variation with altitude and depth. Gravitational potential energy, gravitational potential. Escape velocity, orbital velocity of a satellite,

geo-stationary satellites.

__Properties of bulk matter__Stress-strain relationship, young’s modulus, shear modulus of rigidity. Pascal’s law and its applications ,Viscosity, Bernoulli’s theorem and its applications,Surface energy and surface tension, Heat transfer-conduction, convection and radiation

__Behavior of perfect gas and kinetic theory__Kinetic theory of gases- assumptions, concept of pressure, kinetic energy and temperature, RMS speed of gas molecules.

__Oscillations and waves__Periodic motion – period, frequency, displacement as a function of time.Simple harmonic motion (S.H.M) and its equation; Simple pendulum – derivation of expression for its time period; Longitudinal and transverse waves, speed of wave motion, Beats, Doppler effect.

__Sound__Nature of sound and its propagation in various media, speed of sound, range of hearing in humans; ultrasound; reflection of sound; echo and SONAR

__Electrostatics__Electric charges; conservation of charge, coulomb’s law-force between two point charges Electric field, electric field due to a point charge, electric field lines; electric dipole, electric field due to a dipole; torque on a dipole in uniform electric field. Electric flux, statement of gauss’s theorem Electric potential. Potential difference, electric potential due to a point charge, Conductors and insulators, free charges and bound charges inside a conductor, dielectrics and electric Polarization, capacitors and capacitance, combination of capacitors in series and in parallel, capacitance of a parallel plate capacitor with and without dielectric medium between the plates, energy stored in a capacitor.

__Current Electricity__Flow of electric charges in a metallic conductor, drift velocity, mobility and their relation with electric current; Ohm’s law, electrical resistance, V-I characteristics (linear and non-linear), electrical energy and power, electrical resistivity and conductivity, carbon resistors, colour code for carbon resistors; series and parallel combinations of resistors; temperature dependence of resistance. Internal resistance of a cell, potential difference and emf of a cell, combination of cells in series and in parallel.Kirchhoff’s laws and simple applications. Wheatstone bridge, meter bridge. Potentiometer - principle and its applications to measure potential difference and for comparing emf of two cells; measurement of internal resistance of a cell.

__Magnetic Effects of current and magnetism__Concept of magnetic field, Oersted’s experiment.Ampere’s law and its applications to infinitely long straight wire, straight and toroidal solenoids.fleming’s left hand rule, Fleming’s right hand rule,Force on a moving charge in uniform magnetic and electric fields. Force on a current carrying conductor in a uniform magnetic field. Force between two parallel current- carrying conductors-definition of ampere. Torque experienced by a current loop in uniform magnetic field; moving volt galvanometer- it current sensitivity and conversion to ammeter and voltmeter.

__Electromagnetic induction and alternating currents__Electromagnetic induction: Faraday’s law. Induced emf and current: Lenz’s law, Eddy currents, self and mutual inductance.

__Optics__Reflection of light, spherical mirrors, total internal reflection and its applications.Surfaces, lenses, thin lens formula, magnification, power of a lens, combination of thin lenses in contact, refraction and dispersion of light through a prism. Scattering of light – blue colour of the sky and reddish

appearance of the sun at sunrise and sunset. Microscopes and astronomical telescopes (reflecting and refracting) and their magnifying powers. Wave optics; wave front and Huygens’ principle, reflection and refraction of plane wave at a plane surface using wave fronts.

__Dual Nature of matter and radiation__Photoelectric effect

__Atoms & Nuclei__Composition and size of nucleus, atomic masses, isotopes, isobars; isotones, radioactivity- alpha; beta and gamma particles/rays and their properties; Mass-energy relation, mass defect; binding energy per nucleon and its variation with mass number nuclear fission and fusion.

__Topics from ECE and computers__

__SEMICONDUCTOR PHYSICS__Intrinsic semiconductor – conductivity, atomic and crystal structure of germanium and silicon, covalent bonds, generation and recombination , effect of temperature on conductivity of intrinsic

semiconductor , energy level diagram of conductor , insulator and intrinsic semiconductors . Extrinsic semiconductor material – doping of impurity, P and N type semiconductor and their conductivity . Minority and majority carriers , draft and diffusion currents .

__SEMICONDUCTOR DIODE__P-N junction diode , mechanism of current flow in P-N junction , drift and diffusion current , depletion layer , potential barrier , behavior of P-N junction characteristics Zener and avalanche breakdown , concept of junction capacitance in forward and reverse bias conditions .

__INTRODUCTION TO BIPOLAR TRANSISTOR__Concept of bipolar transistor as two junction three terminal device having two kinds of current carrier , PNP and NPN transistors , their symbols and mechanism of current flow explanation of fundamental current relation .

__TRANSISTOR BIASING AND STABILISATION OF OPERATION POINT__Different transistors biasing circuits for fixing the operating point temperature and Bdc on operating point need for stabilization of operation point , effect of fixing operating point in cut off and saturation

region on performance of the amplifier.

__SINGLE STAGE TRANSISTOR AMPLIFIER__- Calculation of current CE current and voltage gain of single amplifier circuit.

- Explanation of phase reversal of the output voltage with respect to input voltage.

Transistor hybrid low frequency model in CE configuration, “ h” parameters and their physical significance, typical values of this parameters.

Expressions for voltage gain, current gain, input and output impedance for a single stage CE amplifier circuit in ‘h’ parameters, appropriate approximation.

__FIELD EFFECT TRANSISTOR(FET)__Construction, operation, characteristics and equivalent circuit of JFET and its circuit application. Construction, operation,

characteristics and equivalent circuit of MOSFET in depletion,

enhancement modes and its circuit applications.

__COMS, ADVANTAGES AND APPLICATIONS__Comparison of JFET, MOSFET, BJT, Simple FET amplifier circuit and its working principles (without analysis)

__INTRODUCTION TO COMPUTERS__(I) Block diagram of computer & overview of its working,.

(II) Interconnections of various peripherals with computers.

(III) Input/output & secondary storages devices.

(IV) Classification of programming languages.

(V) Classification of computers

__FAMILIARIZATION WITH OPERATING SYSTEM__(I) Introduction to computer operating system

(II) Introduction to DOS structure, system files, batch files & configuration files.

(III) Booting the system from floppy & hard disk.

(IV) Brief introduction to DOS internal & external commands.

(V) Familiarization with windows structures, its use & application.

__PREPARATION OF DOCUMENTS THROUGH WORD PROCESSING__(I) Idea of text editors like Microsoft word, write etc.

(II) Opening a document

(III) Preparing documents inserting diagrams and table

__EDITING DOCUMENTS__(I) Character, word and line editing

(II) Margin setting, paragraph alignment

(III) Block operations

(IV) Spell checker

(V) Saving a document

__MAGNETIC__

__MATERIALS__(I) Different magnetic materials, (Dia, Para, ferro) their properties

(II) Ferromagnetism, ferrimagnetism, domains, permeability, hysteresis loop (including coercive force and residual magnetism and magnetic saturation)

(III) Soft and hard magnetic materials, their examples and typical applications

__BASIC OF MODULATION__(i) Amplitude Modulation

(ii) Frequency Modulation

(iii) Phase Modulation

(iv) Pulse Modulation

(a) Statement of sampling theorem and elementary idea of sampling frequency for pulse modulation

(b)Basic concepts of time division multiplexing (TDM) and frequency division multiplexing (FDM)

(c) Basic ideas about PAM, PPM , PWM and their typical applications

(d)Pulse code modulation (PCM) basic scheme of PCM system. Quantization, quantization error, companding, block diagram of TDM-PCM communication system and function of each block, Advantages of PCM systems. Concepts of differential PCM(DPCM) .

__NUMBER SYSTEMS__(a) Binary and hexadecimal number system: conversion from decimal and hexadecimal to binary and vice – versa. BCD representation.

(b)Binary addition, subtraction, multiplication and division including binary points. BCD addition. 1’s and 2’s complement method of addition/subtraction

__LOGIC GATES__a) Concepts of negative and positive logic

b) Definition, symbols and truth table of NOT, AND , OR NAND NOR , EXOR Gates. NAND and NOR as universal gates.

__LOGIC SIMPLIFICATION__(a) Postulates of bollean algebra , DE Morgan’s theorems.

Various identities. Formulation of truth table and Boolean equation for simple problem. Implementation of Boolean (logic) equations with gates.

(b)Karnaugh map (up to 4 variables) and simple applications in developing combinational logic circuits

__LOGIC FAMILIES__(a) Logic family classification:

- Definition of SSI, MSI, LSI, VLSI

- TTL and MOS families & their sub classification

- Characteristics of TTL and MOS digital gates delay, speed , noise margin, logic levels, power dissipation, fan-in, fan-out, power supply requirement and comparison between TTL and MOS families.

- Interfacing TTL and MOS ICs.

__LOGIC CIRCUITS__(a)Open collector, wired OR and totem pole output circuit operation (qualitative ) for a TTL NAND gate

(b)MOS circuit operation for a standard gate (NOR)

(c) Tristate Switch/Buffer

__COUNTERS__(a) Binary counters

(b)Divide by N ripple counters (including design), Decade counter

(c) Resettable and programmable counters

(d)Down counter , up/down counter

(e) Synchronous counters (only introduction)

(f) Difference between Asynchronous and Synchronous counters

(g)Ring counter with timing diagram

#### MATHEMATICS (60 marks)

__Liner inequalities__Linear inequalities, algebraic solutions of linear inequalities in one variable and their representation on the number line. Graphical solution of linear inequalities in two variables solution of system of linear inequalities in two variables – graphically.

__Binomial Theorem__statement and proof of the binomial theorem for positive integral indices, Pascal’s triangle, general and middle term in binomial expansion, simple applications.

__Sequence and series__Sequence and series, arithmetic progression (AP). Arithmetic mean (AM) geometric progression (GP) general term of a GP sum of n terms of a GP geometric mean (GM) relation between AM and GM sum to n terms of the special series sigma N, sigma n2 and sigma n3.

__Matrices__Addition, multiplication and scalar multiplication of matrices, simple properties of addition, multiplication and scalar multiplication.

__Determinants__Square matrix (up to 3X3 matrices), properties of determinants. Moinors, cofactors and applications of determinants in finding the area of a triangle. Adjoint and inverse of a square matrix.

__Integrals__Integration as inverse process of differentiation.. Integration of a variety of functions by substitution, by partial fractions and by parts ,definite integrals as a limit of a sum.

__Differential equations__Definition, order and degree, general and particular solutions of a differential equation.

__Real Numbers__natural numbers, integers, rational numbers on the number line. terminating/non terminating recurring decimals, Rational numbers as recurring/terminating decimals. laws of exponents with integral powers.

__Polynomials__Definition of a polynomial in one variable, degree of a polynomial, constant, linear, quadratic, cubic polynomials, monomials, binomials. Trinomials, factors and multiples, zeros//roots of a polynomial/equation. remainder theorem , factor theorem. Zeros of a polynomial relationship

between zeros and coefficients of quadratic polynomials statement and simple problems on division algorithm for polynomials with real coefficients.

__Linear equations in two variables__linear equations in one variable, two variables problems from real life, including problems on ratio and proportion and with algebraic and graphical solutions being done simultaneously.

__Corrdinate geometry__Coordinates of a point names and terms associated with the coordinate plane, notations. Plotting points in the plane.

__Lines and angles__1. if a ray stand on a line. Then the sum of a two adjacent angles so formed is 180 degree and the converse.

2. if two lines intersect, the vertically opposite angles are equal.

3. result on corresponding angles. Alternate angels. Interior angles when a transversal intersects two parallel lines.

4. lines.Which are parallel to a given line, are parallel.

5. the sum of the angles of a triangle is 180 degree.6. if a side of a triangle is produced, the exterior angle so formed is equal to the sum of the two interiors opposite angles.

__Triangles__1. two triangles are congruent if any two sides and the included angel of one triangle is equal to any two sides and the included angel of the other triangle (SAS congruence)

2. two triangles are congruent if any two angles and the included side of one triangle is equal to any two angles and the included side of the other triangle (ASA congruence)

3. two triangles are congruent if the three sides of one triangle are equal to three sides of the other triangle.

4. two right triangles are congruent if the hypotenuse and a side of one triangle are equal (respectively) to the hypotenuse and a side of the other triangle.

5. the angles opposite to equal sides of a triangle are equal.

6. the sides opposite to equal angles of a triangle are equal.

7. triangle inequalities and relation between angle and facing side inequalities in triangles. Pythagoras theorem

__Quadrilaterals__1. the diagonal divides a parallelogram into two congruent triangles.

2. in a parallelogram opposite sides are equal and conversely.

3. in a parallelogram opposite angles are equal and conversely.

4. a quadrilateral is a parallelogram if a pair of its opposite sides is parallel and equal.

5. in a parallelogram, the diagonal bisect each other and conversely.

6. In a triangle, the line segment joining the mid points of any two sides is parallel to the third side and its converse.

__Circles__definitions of circle and related concepts, radius, circumference, diameter, chord, arc subtended angel, Tangents to a circle, area of a circle, area of sector and segments of a circle areas

Area of a triangle using hero’s formula (without proof) and its application in finding the area of quadrilateral. Area of rectangle .Surface areas and volumes of cubes, cuboids, spheres (including hemispheres) and right circular cylinders/ cones.

__Statistics__Introduction to statistics collection of data presentation of data tabular form, ungrouped/grouped, bar graphs, histograms (with varying base length), frequency polygons. qualitative analysis of data to choose the correct form of presentation for the collected data mean median mode of ungrouped data

__Quadratic equations__Standard form of a quadratic equation , solution of the quadratic equations .

Relationship between discriminate and nature of roots.

__Introduction to trigonometry__Trigonometric ratios and relations of various angles.Trigonometric identities, trigonometric ratios of complementary angels.problems on Heights and distance.

#### CHEMISTRY (30 marks)

__Structure of atom__Discovery of electron, proton and neutron; atomic number, isotopes and isobarsThomson’s model and its limitations, Rutherford’s model and its limitations.Bohr’s model and it limitations, concept of shells and subshells, dual mature of matter and light, De broglie’s relationship, Heisenberg uncertainty principle,concept of orbitals, quantum numbers, shapes of s, p and d orbitals, rules for filling electrons in orbitals – Aufbau principle, pauli exclusion principle and Hund’s fule electrinc configuration of atoms, stability of half filled and completely filled orbitals.

__Chemical bonding and molecular structure__Valence electrons, ionic bond, covalent bond: bond parameters, Lewis structure, polar character of covalent bond, covalent character of ionic bond, valence bond theory, resonance, geometry of covalent molecules, VSEPR theory, concept of hybridization, involving s, p and d orbital and shapes of some simple molecules,molecular orbital. Theory of homo nuclear diatomic molecules (qualitative idea only), hydrogen bond.

__States of Matter: Gases and Liquids__Type of bonding, melting and boiling points. Boyle’s law.. Charles law,Liquid state – Vapour pressure, viscosity and surface tension.

__Hydrocarbons__Alkanes, Alkenes, Alkynes & Aromatic hydrocarbons

__Electrochemistry__Electrolysis and laws of electrolysis (elementary idea), dry cell- electrolytic cells and galvanic cells, standard electrode potential, EMF of a cell

__Alcohols, Phenols and Ethers__Alcohols ,Phenols and Ethers

__Acid bases and salts__Their definition in terms of furnishing of H and OH ions, general properties and uses, concept and importance of pH scale

__Chemical equations__Chemical equation, balanced chemical equation, implications of balanced chemical equations, types of chemical reactions: combination, decomposition, displacement, double displacement, precipitation, neutralization, oxidation and reduction, oxidation number.

__Metals and non metals__Properties of metals and non metals, reactivity series, formation and properties of ionic compounds, basic metallurgical processes, corrosion and its prevention.

__Periodic classification of elements__Need for classification, modern periodic table, gradation in properties, valency, atomic number, metallic and non metallic properties.

Books

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Name of the Book | Author | Medium | Publisher | Code/ISBN No | Price in Rs |

BSF Head Constable(Radio Operator/Fitter) and ASI (Radio Mechanic) Recruitment Exam | English | Ramesh Publishing House | R-432 / 978-81-7812-732-3 / 9788178127323 | Rs 135 |

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Name of the Book | Author | Medium | Publisher | Code/ISBN No | Price in Rs |

BSF सीमा सुरक्षा बल हेड कांस्टेबल (रेडियो ऑपरेटर/ फिटर) । सहायक उपनिरीक्षक (रेडियो मैकेनिक) [ HC(Radio Operator/Fitter) | ASI Radio Mechanic] | Hindi | Ramesh Publishing House | R-433 / 978-81-7812-732-3 / 9788178127323 | Rs 120 |

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