Practical
27. Practice on measurement of parameters in combinational electrical circuit by applying Ohm’s Law for different resistor values and voltage sources and analyse by drawing graphs.
28. Measure current and voltage in electrical circuits to verify Kirchhoff’s Law
29. Verify laws of series and parallel circuits with voltage source in different combinations.
30. Measure voltage and current against individual resistance in electrical circuit
31. Measure current and voltage and analyse the effects of shorts and opens in series circuit.
32. Measure current and voltage and analyse the effects of shorts and opens in parallel circuit.
33. Measure resistance using voltage drop method.
34. Measure resistance using wheatstone bridge.
35. Determine the thermal effect of electric current.
36. Determine the change in resistance due to temperature.
37. Verify the characteristics of series parallel combination of resistors.
38. Determine the poles and plot the field of a magnet bar.
39. Wind a solenoid and determine the magnetic effect of electric current.
40. Determine direction of induced emf and current.
41. Practice on generation of mutually induced emf.
42. Measure the resistance, impedance and determine inductance of choke coils in different combinations.
43. Identify various types of capacitors, charging / discharging and testing.
44. Group the given capacitors to get the required capacity and voltage rating.
45. Measure current, voltage and PF and determine the characteristics of RL, RC and RLC in AC series circuits.
46. Measure the resonance frequency in AC series circuit and determine its effect on the circuit.
47. Measure current, voltage and PF and determine the characteristics of RL, RC and RLC in AC parallel circuits.
48. Measure the resonance frequency in AC parallel circuit and determine its effects on the circuit.
49. Measure power, energy for lagging and leading power factors in single phase circuits and compare characteristic graphically.
50. Measure Current, voltage, power, energy and power factor in three phase circuits.
51. Practice improvement of PF by use of capacitor in three phase circuit.
52. Ascertain use of neutral by identifying wires of a 3- phase 4 wire system and find the phase sequence using phase sequence meter.
53. Determine effect of broken neutral wire in three phase four wire system.
54. Determine the relationship between Line and Phase values for star and delta connections.
55. Measure the Power of three phase circuit for balanced and unbalanced loads.
56. Measure current and voltage of two phases in case of one phase is short- circuited in three phase four wire system and compare with healthy system.
Theory
Ohm’s Law; Simple electrical circuits and problems.
Kirchoff’s Laws and applications.
Series and parallel circuits.
Open and short circuits in series and parallel networks.
Laws of Resistance and various types of resistors.
Wheatstone bridge; principle and its applications.
Effect of variation of temperature on resistance.
Different methods of measuring the values of resistance.
Series and parallel combinations of resistors.
Magnetic terms, magnetic materials and properties of magnet.
Principles and laws of electro-magnetism.
Self and mutually induced EMFs.
Electrostatics: Capacitor- Different types, functions, grouping and uses.
Inductive and capacitive reactance, their effect on AC circuit and related vector concepts.
Comparison and Advantages of DC and AC systems.
Related terms frequency, Instantaneous value, R.M.S. value Average value, Peak factor, form factor, power factor and Impedance etc. Sine wave, phase and phase difference.
Active and Reactive power. Single Phase and three-phase system.
Problems on A.C. circuits.
Advantages of AC poly-phase system.
Concept of three-phase Star and Delta connection.
Line and phase voltage, current and power in a 3 phase circuits with balanced and unbalanced load.
Phase sequence meter.
