Electric Circuits Efficiency of electrical machines should be calculated by measuring losses and input. output and input. losses and output. losses. losses and input. output and input. losses and output. losses. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Which material has extremely large resistance? Conductor None of these Semiconductor Insulator Conductor None of these Semiconductor Insulator ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits If the dielectric of a capacitor is replaced by conducting material the capacitor will get heated up due to eddy currents. the plate will get short circuited. the capacitance value of the plate will decrease. the capacitor can store infinite charge. the capacitor will get heated up due to eddy currents. the plate will get short circuited. the capacitance value of the plate will decrease. the capacitor can store infinite charge. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Four bulbs of 40 W each are connected in series with a battery across them, which of the following statement is true? The voltage across each bulb is not same. None of these The current through each bulb is same. The power dissipation in each bulb is not same. The voltage across each bulb is not same. None of these The current through each bulb is same. The power dissipation in each bulb is not same. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A battery of E Volts is supplying a steady current to a series circuit of total resistance RΩ and inductance L Henry. A part R1 of the total resistance is suddenly short circuited. Find the expression for current flowing through the battery subsequent to the operation. i = {E / R}[1-(R1 / R) *e - {(R - R1 )*t/L} i = {E / R1 - R)}(1- e - (R1 - R) t / L) i = {E / (R - R1)}[1-(R1 / R) *e- {(R - R1 )t/L} None of these i = {E / R}[1-(R1 / R) *e - {(R - R1 )*t/L} i = {E / R1 - R)}(1- e - (R1 - R) t / L) i = {E / (R - R1)}[1-(R1 / R) *e- {(R - R1 )t/L} None of these ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Zinc cadmium and lead coating is generally provided for all of above. electrical contacts. decoration. corrosion. all of above. electrical contacts. decoration. corrosion. ANSWER DOWNLOAD EXAMIANS APP
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