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- You find that a 25-F capacitor connected to 480 VAC is defective. The storeroom has no capacitors with a 480-VAC rating. However, you find two capacitors rated at 50 F and 370 VAC. Can these two capacitors be connected in such a manner that they can replace the defective capacitor? If yes, explain how they are connected and why the capacitors will not be damaged by the lower voltage rating. If no, explain why they cannot be used without damaging the capacitor.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?1. A purely resistive circuit the current is leading by 90° with respect to voltage. 2. A purely inductive circuit the current is lag behind the voltage by 90°. 3. A purely capacitive circuit the current is lead by 90° with respect to the voltage. 4. A capacitor element stored magnetic energy. 5. An inductor element stored electrical energy. 6. Resistor elements consume power. 7. Angle between current and voltage is called power. 8. The power factor angle for a purely resistive is zero. 9. The power factor angle for a purely inductive load is -90°. 10. The power factor of a purely capacitive is leading.
- r cut 1oum 20gm 1ocm 个 //// wax poper/ A capacitur is mad by sandwiching a sheet of wax psper between two sheebs of aluminum fail, as shoumm What is the figue. capacitance! I the capacitoris aut into twopieces, alme the hme, what oil be the expacitenel of each Diece ? wiggly What lo be the capactnceA 22-k resistor and a 0.02-F capacitor are connected in series to a 5-V source. How long will it take the capacitor to charge to 3.4 V Select one: a. 0.501 ms b. 0.66 ms c. 0.44 ms d. 0.70 msC) A 25 A electrodynamic ammeter is controlled by a spring having a constant of 5.7295x 10-6 Nm/rad. The full scale deflection is 110°. Determine the inductance of the instrument while measuring a current of 20 A. The mutual inductance at 0° deflection is 4 u H and the change in mutual inductance is linear with the deflection.
- elearning.adpoly.ac.ae * Question Completion Status: QUESTION 35 E-1, PC-2. Materials that have no free electrons are called? O thermistors O semicondutors O conductors O insulators QUESTION 36 E-05, PC-03. Three capacitors, 100µF, 200µF and 300µF are connected in series. What is the total capacitance? O 55µF O 600 F O 200µF O 600µF QUESTION 37 E-05, PC-02. Capacitors hold energy in the form of? O Electric field kinetic enegy magnetic field chemical energy Click Save and Submit to save and submit. Click Save All Answers to save all ansuwers.Here are the choices: Lorentz law charge Faraday's law Ohm's law Capacitance Resistivity of materials Resistance vs StrainWhen the switch is closed in above circuit, what is the voltage on the inductor, resistor R1 and R2 after 2.2us , assuming 0 V on the inductor to start?
- The circuit in the figure below contains two resistors, R1 = 4.00kΩ and R2 = 5.00kΩ, and two capacitors, C1 = 4.00uF and C2 = 5.00uF, connected to a battery with emf E = 120V. If no charges exist on the capacitors before switch S is closed, determine the charge q1 on capacitor C1 1.00ms after the switch is closed. Determine the charge q2 on capacitor C2 1.00ms after the switch is closed.Web/Home F4 Search F8 F9 c) Some capacitors are marked 45micro farad save working voltage 25V. On a circuit diagram show how a number of these capacitors may be connected to show a capacitor of capacitance; 45 micro farads safe working voltage of 50 volts. 75 micro farads safe working voltage of 25 volts. 1. I.Step 1 : Show that the voltage division rule for two capacitors in series as in the figure Step 2: For two capacitors in parallel as in the second figure, show that the current division rule is: