Substitution test imp questions 22-23 EC1
Dear students solve the below questions
BEST OF LUCK
Use source transformation to find VO in the circuit
shown below 5M (CO1) (BL2)
1. A series RLC circuit with R = 100Ω , L=100mH and C = 20μF is excited by single phase 230V,50Hz sinusoidal ac supply. Determine the
total impedance , current, active power and power factor of the circuit. Also
determine the voltage across inductor and capacitor (CO2)
(BL3)
2. Define resonance. Derive an expression for band width of series
RLC circuit in terms of circuit constants. Analyse the effect of capacitance on
bandwidth (CO3) (BL4)
(Or)
3. A series RLC circuit with R = 100Ω,L=100mH and C=10μF is excited by 1-phase 200V,50Hz supply. Calculate
(i)
Resonant frequency
(ii)
Band width
(iii)
Quality factor
(iv)
Maximum current at resonance
(v)
Voltage across inductor and
capacitor at resonance. (CO3) (BL2)
Determine the equivalent resistance between the terminals a and b for the circuit shown below 5M (CO1) (BL2)
1.
a) Define the
following (i) Magneto motive force (ii) Reluctance (iii) Magnetic field intensity
(BL1) (CO4) 6M
b) A coil of 500 turns is wound uniformly over a wooden ring
having a mean circumference of 50 cm and a cross sectional area of 500mm2.If
the exciting current through coil is 3A the flux and flux density of the coil (BL4)
(CO4) 4M
Two similar coils when connected in
series aiding has resulted in an inductance of 20mH
and when connected in series opposing
has resulted in an inductance of 4mH.Determine mutual inductance and coefficient of
coupling between coils (BL4) (CO4) 5M
Find the
Thevenin equivalent circuit of the circuit shown in Fig. 4.27, to
the left of the terminals a-b
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