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Q. A 60-Hz, six-pole, wye-connected, three-phase induction motor, with the parameters R1 = R2 = 0.025 and Xl1 = Xl2 = 0.125 , is controlled by variable-frequency control with constant V/f ratio. Use the approximate equivalent circuit of Figure, with jXm moved over to the supply.
Name the materials used in case of Solder and give reasons. Solder : For soft solders tin, lead (in 50-50 ratio) alloy and for hard solders copper- zinc and silver alloy
Definition of bias compensation.
Classify the conducting materials. Conducting materials are classified by low resistivity materials and high resistivity materials. Low resistivity materials: The conduct
Applications of TV picture TUbe
Calculate the cross-sectional area, in mm 2 , of a piece of aluminium wire 100 m long and having a resistance of 2Ω. Take the resistivity of aluminium as 0.03 x 10-6 Ωm.
'Electrical drives' is a general term that is commonly used to describe both DC and AC excited motors that provide continuous rotary motion, whilst 'electrical actuators' provide l
There are two practical ways of improving commutation i.e. of making current reversal in the short - circuited coil as sparkless as possible. These methods are known as (i) resista
hot and cold lime soda process
Q. Explain Demodulation of DSB? Demodulation of DSB SC AM signals requires a synchronous demodulator, which is also known as coherent or synchronous detector. That is, the demo
An intrinsic semiconductor at room temperature has free electrons
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