A field of strength 5 × 10 ampere turns / meter acts at right angles to the coil of 50 turns of area 102m². The coil is removed from the field in 0.1 second. Then the induced e.m.f. in the coil is :
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- A 15-F AC capacitor is connected in series with a 50 resistor. The capacitor has a voltage rating of 600 WVDC. The capacitor and resistor are connected to a 480-V, 60-Hz circuit. Is the voltage rating of the capacitor sufficient for this connection?An RC series circuit is connected to a 120-V, 60-Hz power source. The resistor is 25 and has a voltage drop of 65 volts. What is the capacitance of the capacitor?A coil that consists of 450 windings is wound around a Bakelite ring. The mean diameter of the ring is 100 mm and the diameter of the Bakelite core is 20 mm.The current through the coil is 3A. Determine the field strength
- A resistor R and a capacitor C are connected in series across a 400 V variable ac supply. When the frequency is 40 Hz, it draws 10 A current, and when the frequency is 50 Hz, it draws 15 A current. Find R and C.What are the types of semicondoctors availableDetermine the equivalent inductance and equivalent current of the inductive circuit in Figure Q4. If L5 is replaced with a capacitor of 0.5 mF, how would it affect the branch current? The alternating Voltage source has an amplitude of 20 Vm. Vm Sine 50 Hz L1 5 mH L2 3 mH cele rele Figure Q4 rele celer L3 6.6 mH L4 2.8 mH reler L5 7 mH
- Q4. Determine the equivalent inductance and equivalent current of the inductive circuit in Figure Q4. If Ls is replaced with a capacitor of 0.55 mF, how would it affect the branch current? The alternating Voltage source has an amplitude of 25 Vm. Vm Sine 55 Hz L1 5 mH L2 5.3 mH rele cele Figure Q4 000 ele L3 6.6 mH L4 8.3 mH cele L5 7.7 mHIn the following figure find sa Asa turns ratio is A.O-7E A.07001For the inductor in the figure, find the inductance L in henries. 1 = 100 mm Air core d = 5 mm 200 turns A 39.87 uH B 19.87 µH c) 9.87 pH D 29.87 µH
- 2. The induced voltage across a coil with 250 turns that is located in a magnetic field that is changing at a rate of 8 Wb/s isWhat's the rise time for this system with its closed-loop poles as shown? 14 -6 -4 12 -j6 Select one: a. 0.607 sec b. 3.14 sec C. 1.80 sec d. 0.254 seC e. 0.554 secDI D2 AC D3 D4 R What is the waveform across D1? a) halfwave b) fullwave c) sinewave d) DC line What is the waveform across D3? a) halfwave b) fullwave c) sinewave d) DC line