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The reversibility principle of electrical machines states that an electrical machine can be used to operate either as a motor, converting electrical to mechanical energy, or as a generator doing the reverse, i.e. converting mechanical to electrical energy. The module will therefore also be concerned with electrical generation. In addition to drives and actuators, the module will include a study of transformers.These also rely on electromagnetic principles, but are not intended to produce mechanical motion. They are widely used in electromechanical systems for 'stepping up or down' the magnitude of an AC voltage or current.To understand how motors and generators work, it is first necessary to review the basic electromagnetic principles upon which they depend.
Allocative Efficiency: A neoclassical concept referring to allocation of productive resources (labour, capital, etc.) in a manner that best maximizes well-being (or 'utility') of
Q. What is DTMF dialling? DTMF dialling 1. Uses push buttons 2. Uses 8 different frequencies in pairs. 3. 16 different characters can be represented. 4. The f
(a) Describe why ordinary junction transistor is known as bipolar. (b) Describe working of NPN transistor as common Base configuration. Describe working of NPN transistor in
Define Sigma-Delta Analog to Digital Converters? Sigma-Delta ADCs have the benefit of being implemented almost totally in the digital domain. They are extremely reliable, high
When delivering rated load a 10-kW, 230-V self excited shunt generator has an armature-circuit voltage drop that is 6% of the terminal voltage and a shunt-field current equal to 4%
Give some applications of nichrome. Nichrome is an alloy of iron, chromium, nickel and manganese. This is used for electric iron, for making heating elements and another hea
what is phaser diagram?
RIM Read Interrupt Mask Instruction This instruction is used to read the status of interrupts and read the serial input data. The status byte is loaded into the accu
Carry Fla Registers The size of the accumulator is of 8 bit if after any arithmetical or logical operation 9 th bit is generated i e there is carry beyond D 7 bi
Types of cells and batteries are:- a. Carbon-zinc cell b. Nickel-cadmium cell c. Alkaline celld. d. Edison cell e. Mercury cell
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