9208-01-428 Electrical principles for mechanical engineering(Written Exam)
CITY & GUILDS - LEVEL 4 - DIPLOMA IN MECHANICAL ENGINEERING (9208-11)
- explain the relationship between basic electrical units in d.c. circuits
- calculate the values of units in d.c. circuits using Ohm's law
- explain overall values of series and parallel resistance
- calculate the values of potential differences and currents in circuits with various connections of resistance.
- explain the relationship of power to voltage, current and resistance in d.c. circuits
- calculate the value of power in a d.c. circuit
- explain the relationship between power and energy in d.c. circuits.
- calculate running costs.
- Describe the construction of types of capacitor.
- Explain terms associated with electrostatics.
- Calculate electric flux,electric flux density and electric field strength.
- Explain the effects of connecting capacitors in different combinations.
- Carry out calculations involving capacitors connected in parallel and series combinations.
- Explain how resistance and inductance changes the relationships of voltage and current in a.c. circuits.
- Explain the term power factor in a.c circuits.
- Explain the effects of a law power factor in a.c circuit.
- Explain the relationship between Kw, kVa, kVA R and power factor in a.c circuits.
- Calculate power factor in a.c circuits.
- Explain methods of improving power factor.
- Calculate the rating of a capacitor required to improve a lagging power factor.
- Explain the relationship between common electromagnetic units of measurement.
- Explain the changes in magnetic properties of a soft iron care undergoing cyclic magnetisation.
- Explain the operation of a single phase transformer.
- Explain the relationships between rations in a transformer.
- Explain where the principal losses occur within power transformers.
- Explain how the losses in apower transformer can be minimized.
- Describe the construction of a five limb core three- phase power transformer.
- Explain the principle and operation of tap changes.
- Calculate the efficiency of a transformer.
- Calculate the no load power factor of a transformer.
- Explain the function of components ind.c motors.
- Explain the effects of armature reaction.
- Explain how the winding arrangements affects the applications of a d.c motor.
- Represent the characteristic curves of the different types of d.c motors in a diagram.
- Evaluate the relative characteristics of different types d.c motors.
- Calculate the performance of d.c motor from parameters.
- Evaluate the relative characteristics of different types of three-phase motors.
- Explain the relationship between forque and slip of three -phase induction motors.
- Explain the ability of the three-phase induction motor to be self starting.
- Explain how a change of rotational direction of a three- phase induction motor is achieved.
- Explain terms associated with machine ratings.
- Calculate the rating of a motor for intermitent operation.
- Calculate speed,slip and torque of motors.
- Explain the operating priciples of three- phase synchronous induction motors for different rotar types.
- Explain how forque is produced in three-phase synchronous induction motors.
- Explain the function of components of three - phase wound rotar synchronous induction motors.
- Explain the construction and operation of three- phase synchronous induction motors.
- Assess attributes of different types of motor stories for three- phase squirrel cage induction motors.
- Explain the operating priciple of the Silicon Controlled Rectifier (SCR)
- Explain how precise speed control of a.d.c motor can be achievedd using ans SCR and a suitable feedback signal.
- Explain how speed control of a three- phase induction motor can be achived using a variable frequency drive.
- Explain effects of solid state speed control systems on different types of motors.
- SUBJECT INTRODUCTION By Lecturer
SUBJECT FEE
Rs 16000.00FULL COURSE
(Course Fee)
88500.00 * Exam fees will be added separately. (Info: dl@flits.lk)
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