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Experiments in Basic Electrical Engineering Book 2018 Best Study Materials

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  • Experiments in Basic Electrical Engineering
    by S.K. Bhattacharya

About The Book:-

Laboratory skill development is one of the most important aspects of any Engineering Curriculum. For performing experiments the students need to come prepared in the laboratory class and work in small groups independently. To be able to come prepared, and to utilize the time available effectively, the students require the relevant study material.

This laboratory manual provides all the required theoretical inputs for performing an experiment. For each experiment, an instruction sheet has been prepared which includes the objectives of the experiment, the related circuit diagram, the equipment, the instruments and accessories required, the theory in brief, the procedure, the observations to be made, the calculations to be made, the graphs to be drawn, the conclusions to be arrived at, etc. A set of questions directly related to the experiment is also included in each instruction sheet for the students to answer. This manual also has included the assessment procedure of students for their laboratory work.

The content of this manual has been developed by consulting the list of experiments in Basic Electrical and Electronics Engineering of all the Indian Universities. Using this manual as a guide, the component skills that are to be developed through the laboratory experimentation include reading and interpreting a given circuit, modifying the given circuit according to the available experimental set-up, selecting the type, range and rating of instruments and accessories required, making connections according to the circuit, taking readings and recording them, using criterion for accepting or rejecting a particular data, analyzing data and interpreting results, presenting results in graphical and other forms, drawing conclusions, comparing outcome with the stated objectives, etc..

Contents:-

  • To study the constructional features of an Ammeter, Voltmeter, Wattmeter and Energy meter
  • To connect the following measuring instruments in the circuit and to use them for the measurement of relevant quantities: Wattmeter, Frequency meter, Power factor meter, Singlephase and three-phase Energy meters, Maximum demand indicator, Phase sequence indicator and Gauss meter
  • To verify Ohm?s law and its limitations
  • To verify Kirchhoff?s laws: (a) verification of Kirchhoff’s current law (b) verification of Kirchhoff’s voltage law
  • To verify Superposition theorem
  • To verify Thevenins theorem
  • To verify Maximum Power Transfer theorem
  • To verify Reciprocity theorem
  • To verify that the total resistanceR of a series circuit is given by R R +R R R ? + R where R R , etc. are the T T 1 2 3 4 n 1 2 resistances connected in series in an electrical circuit
  • To verify that the total resistanceR of a parallel circuit is given by 1/R= 1/R+ 1/RT T 1 2 1/R + …….. + 1/R where R ,R ,R , etc. are the resistances connected in parallel in an electrical circuit? To measure the resistance of a voltmeter 3 n 1 2 3 and an ammeter
  • To measure the low, medium and high resistance
  • To extend the range of an ammeter and a voltmeter with the use of shunts and multipliers respectively (To convert an ammeter into a voltmeter)
  • To measure the resistivity of copper, aluminium and nichrome
  • To determine the hot and cold resistance of a filament lamp graphically and to find the following relations for a given filament lamp (a) variation of resistance with temperature (b) variation of resistance with voltage (c) variation of power with voltage (d) variation of temperature with voltage variation
  • To determine the temperature coefficient of resistance of conductors like copper, nichrome, etc
  • To measure resistance and inductance of a given coil by ammeter-volmeter method
  • To study the charging and discharging of a capacitor, measurement of its capacitance and power factor and connection of capacitors in series and parallel
  • To measure the resistance, inductance, capacitance and Q by bridge method
  • To verify that in an ac circuit the phasor sum of currents at any junction is zero
  • To find the voltage-current relationship in a R-L series circuit and to determine the power factor of the circuit
  • To study the series and parallel resonance in ac circuits
  • To measure the power and power factor in a single phase ac circuit using wattmeter and power factor meter
  • To measure the power in a single-phase circuit by (i) three-voltmeter method and (ii) three-ammeter method
  • To verify the voltage and current relations in star and delta connected systems
  • To measure the power and power factor in a three-phase circuit by two-wattmeter method at different power factors and to measure reactive power in a three-phase circuit
  • To observe the B-H loop of a ferro magnetic core material on CRO
  • To separate the core losses and copper losses occuring in an inductive coil
  • To calibrate a given dc ammeter and voltmeter by (i) potentiometer and (ii) sub-standard meter
  • To adjust and calibrate a single-phase energy meter by (i) direct loading method (ii) comparing with a sub-standard meter
  • To adjust and calibrate a three-phase energy meter by (i) direct loading method (ii) comparing with a sub-standard meter
  • To measure the resistance, voltage and current with the help of an electronic multimeter
  • To observe the wave shape of an alternating (sinusoidal) supply on CRO and to measure its phase, frequency, time period and amplitude
  • To test a regulated power supply with the help of VTVM and electronic multimeter
  • To use a bridge rectifier for full wave rectification of a sinusoidal ac supply and to determine the relationship between r.m.s. and average values of rectified voltage
  • To test a battery for its charged and discharged condition and to make connections for charging
  • To measure the value of earth resistance
  • To measure the strain with the help of a transducer
  • To study the working of a thermocouple and a pyrometer
  • To find the dielectric strength of transformer oil
  • To study the working and applications of instrument transformers
  • To connect a tube light and to study its minimum operating voltage, current, power factor and power
  • To determine fusing characteristics and fusing factor of a given fuse
  • To locate faults in a cable by Murray loop test
  • To obtain the I-V characteristics of a P-N junction diode
  • To obtain the characteristics of a transistor under (A) common base (CB) and (B) common emitter (CE) configuration
  • To verify truth table of logic gates
  • To verify rating of a compact fluorescent lamp (CFL)
  • To verify the working of a LVDT
  • To perform open-circuit and short-circuit tests on a single-phase
  • transformer and calculate its efficiency
  • To start and reverse the direction of rotation of a (i) DC motor , (ii) induction motor.

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