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**Description :** When measuring strain, ballast circuit use a capacitor to act as a high pass filter. This is done when: a) Static strain are being measured b) Dynamic strain are being measured c) Both Static and dynamic strain are being measured d) None of the above

**Last Answer :** When measuring strain, ballast circuit use a capacitor to act as a high pass filter. This is done when: Dynamic strain are being measured

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**Description :** The purpose of the capacitor within component 'B' of the circuit shown in the illustration is to ____________. EL-0081 A. prolong the life of the component's contacts B. discharge the neon within ... the inductive reactance in the circuit D. store power to operate the circuit should 'D' open

**Last Answer :** Answer: A

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**Description :** When a capacitor is connected in series with a Marconi antenna? A. Antenna open circuit stops transmission B. An inductor of equal value must be added C. No change occurs to antenna D. Antenna resonant frequency increases

**Last Answer :** D. Antenna resonant frequency increases

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**Last Answer :** A dielectric material is placed in between the plates of a capacitor, it Increases the capacitance.

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**Last Answer :** In a power supply a shorted input capacitor is likely to result in No voltage output.

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**Last Answer :** For a pure capacitor, the voltage-current relationship is: Voltage lags current by 90*

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**Description :** Why shunt capacitor is used?

**Last Answer :** To improve voltage at receiving end and power factor

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**Description :** Why capacitor bank is used?

**Last Answer :** In industrial or factory used E.B Power supply must be maintained above 0.90 power factor is compulsory for avoid EB Penalty. So APFC ( automatic Power factor control ) panel is used to maintained balance the load and PF maintained.

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**Description :** How do you charge a capacitor with a battery?

**Last Answer :** The capacitor is connected in parallel with the battery.

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**Description :** Which side of a capacitor is negative?

**Last Answer :** In electrolytic type negative is shorter lead and usually mark in the tank. But of course not applicable to non-polar.

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**Description :** what does a capacitor do?

**Last Answer :** It store energy in.the form of charges It allows AC but restricted DC

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**Description :** The magnitude of the open-circuit and short circuit input impedance of a transmission line are 100 ohm and 25 ohm respectively. The characteristic impedance of line is: (1) 25 ohm (2) 50 ohm (3) 75 ohm (4) 100 ohm

**Last Answer :** The magnitude of the open-circuit and short circuit input impedance of a transmission line are 100 ohm and 25 ohm respectively. The characteristic impedance of line is 25 ohm.

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**Description :** A student writes the following statements about the inductors' and the capacitors'. (a) An inductor behaves almost like an open' for very low frequency a.c. sources as well as d.c. sources. (b) A capacitor behaves like ... an open' while a capacitor behaves like a short. (1) a (2) b (3) c (4) d

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**Last Answer :** If the centrifugal switch of a two-value capacitor motor using two capacitors fails to open then Electrolytic capacitor will, in all probability, suffer break down.

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**Description :** In the given circuit, charge Q2 on the 2μF capacitor changes as C is varied from 1μF to 3μF . Q2 as a function of ‘C’ is given properly by : (figures are drawn schematically and are not to scale).

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**Description :** Calculate the steady stage current in the 2Ω resistor shown in the circuit. The internal resistance of battery is neglible and the capacitance of the capacitor is 0.2 microfarad.

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**Description :** In the circuit shown, the cell is ideal, with emf 10V, each resistance is of 2Ω , the potential difference across the capacitor is (1) 12V (2) 10V (3) 8V (4) zero

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**Description :** AC Voltage applied to a Pure Inductor and a Pure Capacitor in Series (LC Series Circuit).

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**Description :** AC Voltage applied to a Capacitor and a Resistor in Series (RC Series Circuit)

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**Description :** In the given LCR series circuit fed by 200V–50Hz a.c. mains. Find (i) current in the circuit (ii) value of inductor L (iii) value of capacitor C and (iv) value of C (for same L) to have power factor of the circuit unity.

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**Description :** A series LR circuit draws a power of 550W from a 220V- 50Hz source. The power factor of the circuit in 0.8. The current in the circuit lags behind the voltage. Show that a capacitor, of value about \((\ ... 10^{-2})F,\) will have to be connected in the circuit to bring its power factor to unity.

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**Description :** A current of 4A flows in a coil when connected to 12V dV source. If the same coil is connected to a 12V, 50 rad/s a.c. source, a current of 2.4 A flows in the circuit. Determine the ... the coil. Also find the power developed in the circuit if a 2500μF capacitor is connected in series with the coil.

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**Description :** An LC circuit contains a 20 mH inductor, and a 50 μF capacitor, of the circuit is negligible. Let the instant, the circuit is closed, be t = 0. The (first instant of) time, at which energy stored would be completely magnetic, is (1) t = 0 (2) t = 1.57 ms (3) t = 3.14 ms (4) t = 6.28 ms

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**Description :** A circuit is made up of an (almost) pure inductor and an (almost) pure capacitor, connected together. The circuit (i) has a resonance frequency v0 when it is put in an evacuated container and (ii) has a resonance frequency ' v0 when the ... ) \(\frac{(v_0)^2}{(v)^2}\) (4) \(\frac{(v_0)^2}{(v_0)^1}\)

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**Description :** An electrical circuit is made up of an inductance (L), a capacitor (C) and a resistor (R), connected in series. When it is connected across the mains (Voltage = 111.8 V ≃ 12500 V), it draws 125W power from these mains. ... , 142Ω (2) 106.5Ω , 213Ω , 106.5Ω (3) 89Ω , 178Ω , 89Ω (4) 71Ω , 142Ω , 71Ω

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**Description :** The graph drawn here, shows, simultaneously the variation of the (alternating) voltage (applied) and the current (flowing) for a given series LCR circuit. Without making any other change, the power factor of this circuit, can be made unity if ... (\frac{(ω^2 LC-1)}{C}\) (4) \(\frac{(ω^2 LC-1)}{C}\)

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**Description :** Find the value of the phase lag/lead between the current and voltage in the given series LCR circuit. Without making any other change, find the value of the additional capacitor, such that when ‘suitably joined’ to the capacitor ( C= 2µF) as shown, would make the power factor of this circuit unity.

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**Description :** In the circuit shown in the figure, the capacitor C is charged to a potential Vo. The heat generated in the circuit when the switch S is closed, is

**Last Answer :** In the circuit shown in the figure, the capacitor C is charged to a potential Vo. The heat generated in the circuit when ... )^(2)` D. `8 CV _(0)^(2)`

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**Description :** In an L-C circuit shown in figure C=1F, L=4H At time t=0, charge in the capacitor is 4C and it is decreasing at a rate of `sqrt5 C//s` Choose the corr

**Last Answer :** In an L-C circuit shown in figure C=1F, L=4H At time t=0, charge in the capacitor is 4C and it is ... a and b are correct D. Both a and b are wrong

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**Description :** In an `LC` circuit shows in Fig. `C = 1 F`, `L = 4 H`. At time `t = 0`, charge in the capacitor is `4 C` and it is decreasing at the rate of `sqrt(5)

**Last Answer :** In an `LC` circuit shows in Fig. `C = 1 F`, `L = 4 H`. At time `t = 0`, charge in the capacitor is `4 ... ))` C. `2tan^(-1)((2)/(3)) D. None of these

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**Description :** In an `LC` circuit shows in Fig. `C = 1 F`, `L = 4 H`. At time `t = 0`, charge in the capacitor is `4 C` and it is decreasing at the rate of `sqrt(5)

**Last Answer :** In an `LC` circuit shows in Fig. `C = 1 F`, `L = 4 H`. At time `t = 0`, charge in the capacitor is `4 ... statement. A. 6 C B. 8 C C. 10 C D. 12 C

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**Description :** An L-C circuit contains a 0.60 H inductor and a `25muF` capacitor is `3.0xx10^(-5)C?`

**Last Answer :** An L-C circuit contains a 0.60 H inductor and a `25muF` capacitor is `3.0xx10^(-5)C?`

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**Description :** What is the capacitive resistance of a 0.04 microfarad capacitor in ac circuit that has a frequency of 1000 hz?

**Last Answer :** The capacitive reactance is approximately 4 kÃŽÂ© .

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