Electric Circuits Phase voltages of a star connected alternator are ER = 240∠0o V, EY = 240∠-120o V and EB = 240∠ + 120o V. What is the phase sequence of the system? BYR. RBY. YBR. RYB. BYR. RBY. YBR. RYB. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits The capacitive reactance of an electric circuit is 50 Ohms. The frequency of supply becomes doubled. What is the new capacitive reactance? 50 Ohms. 200 Ohms. 25 Ohms. 100 Ohms. 50 Ohms. 200 Ohms. 25 Ohms. 100 Ohms. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Which of the following is applicable for both linear and non-linear circuits? Thevnin’s theorem. Superposition theorem. None of these . Norton’s theorem. Thevnin’s theorem. Superposition theorem. None of these . Norton’s theorem. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A 230V, 50Hz voltage is applied to a coil having L = 5H and R = 2 Ohm in series with capacitance C. When the voltage across the coil is 400V, find the value of C? 10.54 µF. 4.78 µF. 1.8 µF. 8.51 µF. 10.54 µF. 4.78 µF. 1.8 µF. 8.51 µF. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits If a capacitors of capacitance 100 μF is connected across a voltage source of 10 V, then what will be the energy stored in that capacitor? 5 × 10 - 2 Joule. 10 × 10 - 3 Joule. 5 × 10 - 3 Joule. 10 × 10 6 Joule. 5 × 10 - 2 Joule. 10 × 10 - 3 Joule. 5 × 10 - 3 Joule. 10 × 10 6 Joule. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A variable capacitance is one whose capacitance changes with time. can be changed manually or by mechanical force. changes with temperature. changes with voltage. changes with time. can be changed manually or by mechanical force. changes with temperature. changes with voltage. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS