Experiments in Ac Machines
EXPERIMENTS IN
ELECTRICAL A.C. MACHINES
Prof. Engr. Abdul Hameed
Prof. Engr. Rana Riaz Ahmad
Faculty of Engineering * University of the Central Punjab
(Incorporated by Ordinance No. XXIV of 2002 promulgated by Government of the Punjab)
INTRODUCTION
This manual covers all necessary experiments at the graduate engineering level and is aimed to demystify the students from abstract concepts. The manual is enriched with clear circuits, specifications, procedures, observations, viva questions and answers and test questions.
An electric machine is a device that can convert either mechanical energy to electrical energy or electrical energy to mechanical energy. When such a device is used to convert mechanical energy to electrical energy, it is called a generator. When it converts electrical energy to mechanical energy, it is called a motor. Transformer is a device that converts electrical energy to electrical energy from one level to other level.
Electrical machines play a key role in modern daily life. Electric motors in the home run refrigerators, freezers, vacuum cleaners, blenders, air conditioners, fans and many similar appliances. Generators are necessary to supply the power for all motors and other appliances. Electric power is a clean and efficient energy source that is easy to transmit over long distances, and easy to control.
This manual (text) on A.C. Machines Laboratory is an attempt to fill a need for up-to-date information on: (i) How to make connections for A.C. machines (ii) How to operate A.C. machines safely (iii) How to adjust performance data and (iv) How to draw characteristics of A.C. machines.
All experiments are designed to verify the related theory. It is very rare that the theoretical results match with those achieved practically. The possible reasons for this variation can be the limitations of practical setup, the errors in the measuring instruments, the reading errors, temperature variations, etc.
This
ELECTRICAL A.C. MACHINES
Prof. Engr. Abdul Hameed
Prof. Engr. Rana Riaz Ahmad
Faculty of Engineering * University of the Central Punjab
(Incorporated by Ordinance No. XXIV of 2002 promulgated by Government of the Punjab)
INTRODUCTION
This manual covers all necessary experiments at the graduate engineering level and is aimed to demystify the students from abstract concepts. The manual is enriched with clear circuits, specifications, procedures, observations, viva questions and answers and test questions.
An electric machine is a device that can convert either mechanical energy to electrical energy or electrical energy to mechanical energy. When such a device is used to convert mechanical energy to electrical energy, it is called a generator. When it converts electrical energy to mechanical energy, it is called a motor. Transformer is a device that converts electrical energy to electrical energy from one level to other level.
Electrical machines play a key role in modern daily life. Electric motors in the home run refrigerators, freezers, vacuum cleaners, blenders, air conditioners, fans and many similar appliances. Generators are necessary to supply the power for all motors and other appliances. Electric power is a clean and efficient energy source that is easy to transmit over long distances, and easy to control.
This manual (text) on A.C. Machines Laboratory is an attempt to fill a need for up-to-date information on: (i) How to make connections for A.C. machines (ii) How to operate A.C. machines safely (iii) How to adjust performance data and (iv) How to draw characteristics of A.C. machines.
All experiments are designed to verify the related theory. It is very rare that the theoretical results match with those achieved practically. The possible reasons for this variation can be the limitations of practical setup, the errors in the measuring instruments, the reading errors, temperature variations, etc.
This