BE1251 - BASIC ELECTRICAL, ELECTRONICS AND
MEASUREMENT ENGINEERING
Unit I
1. Using mesh analysis, determine the current through 1Ω resistor in the given circuit.
2. Find the voltage across 5Ω resistor for the circuit shown in figure below using mesh
analysis.
3. Determine the node voltages for the given circuit by nodal method.
4. Find the equivalent resistance between the terminals ‘a’ and ‘b’ for the network shown in
figure.
5. Calculate the current through the 4Ω resistor in the given figure using superposition
Theorem
6. Compute the current in the 23Ω resistor of the following figure shown below by applying
the superposition principle.
Note : In Unit I Solve and see all mesh and nodal problems thoroughly and type of questions
may differs
Unit II
1. With neat diagram, explain the construction and working principle of a D.C Motor
2. With neat diagram, explain the construction and working principle of a D.C Generator.
3. Explain the construction and principle of operation of a transformer
4. Derive the expression for EMF induced in a single-phase transformer.
5. Describe the construction and principle of operation of stepper motor.
Unit III
1. With block diagram draw and explain Wind Energy Conversion System.
2. Explain in detail about Solar Photovoltaic Generation System.
3. What is the need for earthing? And explain the different types of earthing.
4. Explain in detail
(i)
circuit breaker
(ii)
Fuses
5. Explain in detail the structure of power system.
Unit IV
1.
2.
3.
4.
5.
Describe the working of a PN junction diode with neat diagram. Also explain its
characteristics
Explain the construction and working of Bipolar Junction Transistor (BJT). Also
draw the input and output characteristics of the common emitter configuration.
Explain the construction and working of Zener diode with a neat sketch. Also
distinguish between Avalanche and Zener breakdowns.
Explain the inverting and non-inverting amplifier and derive its gain. Also explain the
application of operational amplifier : Differentiator and Integrator
Draw and Explain (i) Zener voltage regulator (ii) Half and full wave rectifier.
Note : In BJT Also study CB and CC configurations
Unit V
1. Explain the working of permanent magnet moving coil (PMMC) measuring instrument
with construction arrangement also derive the torque developed in PMMC instrument.
2. Explain the construction and working of attraction and repulsion type moving iron
measuring instrument. Give the advantages and limitations of such instruments.
3. Explain the Construction and working principle of Linear Variable Differential
Transformer (LVDT) with relevant circuit neat diagram.
4. Explain the working of single phase energy meter with neat sketch along with phasor
diagram.
5. Describe briefly with neat diagram, the working of RTD and LDR
.