A dc motor running with a speed of N rpm obtain an expression for EMF induced in the armature winding.
6 a] A dc motor running with a speed of N rpm obtain an expression for EMF induced in the armature winding. Solution : When the Armature of D C…
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For the single phase transformer obtain an expression for EMF induced in either primary side or secondary side
5 c]For the single phase transformer obtain an expression for EMF induced in either primary side or secondary side. Solution : N1 – be the no. of turns of the…
Calculate the speed of the machine running
5 b] A shunt generator delivers 50 KW at 250 V and 400 rpm. The armature and shunt field resistances are 0.02 Ω and 50 Ω respectively. Calculate the speed…
With a neat diagram explain the constructional details of DC generator.
5 a] With a neat diagram explain the constructional details of DC generator. Construction of DC Machine. Salient parts of a D.C.Machine are:(i)Yokeii) Field system (poles)(iii) Armature(iv) Commutator(v)Brushes Yoke:It is…
Two resistors are connected in parallel and a voltage of 200V is applied to the terminals. The total current taken is 2.5 A, and the power dissipated in one of the resistors is 1500 W. What is the resistance of each element?
2.C] Two resistors are connected in parallel and a voltage of 200V is applied to the terminals. The total current taken is 2.5 A, and the power dissipated in one…
A pure inductor excited by sinusoidally varying AC voltage, show that the average power consumed by the inductor is zero.
2.B] A pure inductor excited by sinusoidally varying AC voltage, show that the average power consumed by the inductor is zero. Answer:- P = 0 [Hence Proved]
A load resistance 𝑅𝐿Ω is connected across the source 𝑉𝑆 with internal resistance 𝑅𝑖𝑛𝑡 in series with source; obtain the condition that the power transferred to load from source is maximum.
2.A] A load resistance 𝑅𝐿Ω is connected across the source 𝑉𝑆 with internal resistance 𝑅𝑖𝑛𝑡 in series with source; obtain the condition that the power transferred to load from source…
Resistance R is connected in series with a parallel circuit comprising two resistances of 12 Ω and 8Ω respectively. The total power dissipated in the circuit is 70 W when the applied voltage is 20V. Calculate R.
1.C] A resistance R is connected in series with a parallel circuit comprising two resistances of 12 Ω and 8Ω respectively. The total power dissipated in the circuit is 70…
A sinusoidally varying alternating voltage is given by, 𝑣(𝑡) = 𝑉𝑚𝑠𝑖𝑛𝜔𝑡, to obtain its RMS value of voltage in terms of maximum value.
1.B] A sinusoidally varying alternating voltage is given by, 𝑣(𝑡) = 𝑉𝑚𝑠𝑖𝑛𝜔𝑡, to obtain its RMS value of voltage in terms of maximum value. Answer:- RMS Value of an Alternating…
How rotating magnetic field is set up in the case of three phases induction motor? Illustrate with neat figures.
7.A] How rotating magnetic field is set up in the case of three phases induction motor? Illustrate with neat figures. Answer:-