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**Description :** Reciprocal of reluctance is?

**Last Answer :** Reciprocal of reluctance is permeance.

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**Description :** What is the reciprocal of capacitance?

**Last Answer :** The reciprocal of capacitance is called elastance, and its unit is the reciprocal farad, also called the daraf.

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**Description :** what is the reciprocal of admittance?

**Last Answer :** impedance is the reciprocal of admittance.

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**Description :** Conductance is reciprocal of?

**Last Answer :** Conductance is reciprocal of resistance.

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**Description :** Parallel Reactance and Resistance Example 1

**Last Answer :** Parallel Reactance and Resistance Example 1

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**Description :** AC Circuits with Resistance but No Reactance

**Last Answer :** AC Circuits with Resistance but No Reactance AC Circuits with Resistance but No Reactance Series resistances let two resistances R 1 and R 2 are connected in series as shows in figure and there ... voltage. Voltage V A is common to both the branch hence voltage V A is common reference.

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**Description :** Capacitive reactance is more when?

**Last Answer :** Capacitive reactance is more when capacitance is less and frequency of supply is less.

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**Description :** What is the unit of reactance?

**Last Answer :** Unit of reactance is Ohms ( Ω ) .Reactance is denoted by X .

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**Description :** What is the inverse of reactance?

**Last Answer :** Inverse of reactance is Susceptance .Unit of Susceptance is Siemens.

277 views

**Description :** Define impedance diagram and reactance diagram.

**Last Answer :** Impedance diagram: Impedance diagram is the simplified equivalent circuits of single line or one line diagrams of power system in which all components are represented by their equivalent circuit. ... machines are neglected and is used only for fault current calculation is called reactance diagram.

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**Description :** What do you mean by exciting resistance and exciting reactance?

**Last Answer :** At no-load, a transformer behaves as a highly inductive load connected to the system which contains some resistance and inductance in parallel. The resistance is called exciting resistance R0 = V1/I w and reactance is called exciting reactance, X0 = V1/I mag

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**Description :** If the % reactance upto the fault point is 20%, then the short circuit current will be

**Last Answer :** If the % reactance upto the fault point is 20%, then the short circuit current will be 5 times the full load current

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**Description :** A single phase transformer has resistance and reactance of 0.2 pu and 0.6 pu respectively. Its pu voltage regulation at 0.8 pf lagging would he

**Last Answer :** A single phase transformer has resistance and reactance of 0.2 pu and 0.6 pu respectively. Its pu voltage regulation at 0.8 pf lagging would he 0.52

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**Description :** Consider the following statements. Which of these statements are correct ? (1) Reactance relays are preferred for ground fault relaying (2) Impedance relays are most suitable for:protecting long transmission lines (3) Mho relays are best ... (1) and (3) (C) (2) and (4) (D) (1), (2) and (4)

**Last Answer :** Consider the following statements. Which of these statements are correct ? (1) Reactance relays are preferred for ground fault relaying (2) Impedance relays are most suitable for:protecting long transmission lines (3) Mho relays are ... (1) and (3) (C) (2) and (4) (D) (1), (2) and (4)

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**Description :** Reactance relay is normally preferred for protection against

**Last Answer :** Reactance relay is normally preferred for protection against earth faults

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**Description :** Ratio of the rotor reactance X to the rotor resistance R for a two-phase servo motor (A) is equal to that of a normal induction motor (B) is less than that of a normal induction motor (C) ... than that of a normal induction motor (D) may be less or greater than that of a normal induction motor

**Last Answer :** C

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**Description :** A 4000 kVA, 11 kV/132 kV delta-star connected 3-phase transformer has reactance, x1 = 0.12 p.u. The actual value of x1 referred to the low voltage side is (A) 0.85 Ω (B) 3.63 Ω (C) 36.3 Ω (D) 252 Ω

**Last Answer :** A 4000 kVA, 11 kV/132 kV delta-star connected 3-phase transformer has reactance, x1 = 0.12 p.u. The actual value of x1 referred to the low voltage side is 3.63 Ω

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**Description :** A reactance relay is (A) Voltage restrained directional relay (B) Directional restrained over-current relay (C) Voltage restrained over current relay (D) Directional restrained over voltage relay

**Last Answer :** A reactance relay is Directional restrained over-current relay

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**Description :** Circuits with XL Alone

**Last Answer :** Circuits with XL Alone X L values in series let two inductive reactances X L 1 and X L 2 are connected in series and has value 50 ohm and 50 ohm respectively. 100 volts A C ... phasor. And it is taken horizontal. Phase angle between inductive current and voltage is same 90 degree.

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**Description :** A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by an inductor of equivalent reactance value. It will?

**Last Answer :** A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by an inductor of equivalent reactance value. It will not start at all.

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**Description :** For a two -port reciprocal network, the three transmission parameters are A = 4, B = 7 and C = 5. What is the value of D ? (a) 9.5 (b) 9.0 (c) 8.5 (d) 8.0

**Last Answer :** For a two -port reciprocal network, the three transmission parameters are A = 4, B = 7 and C = 5. What is the value of D ? (a) 9.5 (b) 9.0 (c) 8.5 (d) 8.0

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**Description :** Admittance is reciprocal of (a) susceptance (b) impedance (c) reactance (d) conductance

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**Description :** For a two port network to be reciprocal: (A) Z11= Z22 (B) Y21 = Y21 (C) h21 = h22 (D) AD-BC = 0

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**Description :** The reciprocal of resistance is called (A) Impedance (B) Conductance (C) Inductance (D) Susceptance

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**Description :** what is the reciprocal of resistance ?

**Last Answer :** reciprocal of resistance is conductance.

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**Last Answer :** Circuits with capacitive reactance X C alone. Capacitive reactance X C values in series. There is no resistance or inductive reactance only capacitive reactance is there. Let two capacitive ... horizontal in phasor diagram. The total current I T leads voltage V A by 90 degree.

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**Description :** Potier reactance of an alternator is almost the same as (a) Field winding reactance (b) Total armature reactance (c) Leakage reactance of field winding (d) Armature leakage reactance

**Last Answer :** Potier reactance of an alternator is almost the same as Armature leakage reactance

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**Description :** The operating characteristics of a reactance type distance relay (A) a stepped waveform for increasing reactance (B) a straight line for a constant reactance (C) a circle for a constant reactance (D) a set of circles for variable reactances

**Last Answer :** The operating characteristics of a reactance type distance relay a straight line for a constant reactance

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**Description :** A 3-phase star-connected 75 MVA, 25 kV 3-phase synchronous generator has a synchronous reactance of 1.0 p.u. The per unit value to a 90 MVA base and 30 kV is (A) 2/15 p.u. (B) 5/6 p.u. (C) 1.0 p.u. (D) 1.2 p.u.

**Last Answer :** A 3-phase star-connected 75 MVA, 25 kV 3-phase synchronous generator has a synchronous reactance of 1.0 p.u. The per unit value to a 90 MVA base and 30 kV is 5/6 p.u.

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**Description :** The maximum possible power of a 3-phase synchronous motor with synchronous reactance 0.8 p.u. connected to a bus-bar of 1.0 p.u. and excitation adjusted to 1.2 p.u. is (A) 0.5 p.u. (B) 0.96 p.u. (C) 1.5 p.u. (D) 1.8 p.u.

**Last Answer :** The maximum possible power of a 3-phase synchronous motor with synchronous reactance 0.8 p.u. connected to a bus-bar of 1.0 p.u. and excitation adjusted to 1.2 p.u. is 1.5 p.u.

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**Description :** A single phase, 2000V alternator has armature resistance and reactance of 0.8 ohm and 4.94 ohm respectively. The voltage regulation of the alternator at 100A, 0.8 leading pf is (A) 7% (B) - 8.9% (C) - 6.3% (D) 0%

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**Description :** What is the reactance of a 3H inductor when the frequency is 120 Hz? A. 2260 ohm B. 2060 ohm C. 360 ohm D. 0

**Last Answer :** 2260 ohm is the reactance of a 3H inductor when the frequency is 120 Hz.

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**Description :** If X is the system reactance and R is its resistance, the power transferred is maximum when (1) X=R (2) X=1.414 R (3) X=1.732 R (4) X=2R

**Last Answer :** x = 1.732R

289 views

**Description :** The synchronous reactance of the synchronous machine is the ratio between: (A) open circuit voltage and short circuit current at Constant field current (B) short circuit Voltage and open ... at different field current (D) short circuit voltage and open circuit current at different field current

**Last Answer :** The synchronous reactance of the synchronous machine is the ratio between: open circuit voltage and short circuit current at constant field current

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**Description :** A Reactor having an inductive reactance of 4 ohm is connected to the terminals of a 120 V AC generator. Calculate the power associated with the reactor. (A) 3.6 kvar (B) 30 kvar (C) 7.2 kvar (D) 4.16 kvar

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**Last Answer :** In an induction motor, if the rotor resistance is equal to stand-still reactance then the maximum torque is equal to starting torque.

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**Description :** The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 Q. If frequency is increased to 100 Hz, reactance becomes_____ohms.

**Last Answer :** The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 Q. If frequency is increased to 100 Hz, reactance becomes 10 ohms.

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**Description :** Assertion (A): The principle of reciprocal inhibition states that the presence of two mutually opposing forces at the same time will lead to the stronger force inhibiting the weaker one. Reason (R): The principle of ... but Reason (R) is false. d. Assertion (A) is false, but Reason (R) is true.

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**Description :** A student did the experiment on finding the speed of sound (say V) using a given resonance tube of diameter D. She used five tuning forks of different frequencies and observed the first and second resonance lengths in each case. She then ... 10/3|C2| (4) v = M1/4 = 3/3M2 and D = 10|C1| = 10/3|C2|

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**Description :** A student did the experiment on finding the speed of sound (say V) using a given resonance tube of diameter D. She used five tuning forks of different frequencies and observed the first and second resonance lengths in each case. She then ... 10/3|C2| (4) v = M1/4 = 3/3M2 and D = 10|C1| = 10/3|C2|

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**Description :** Promises which form consideration or part of the consideration for each other are called (a) reciprocal promise (b) promisor alone (c) agent (d) all the above

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**Description :** What are Reciprocal promises types? (a) One (b) Two (c) Three (d) Five

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**Description :** If zeroes of the polynomial x2 + ax – b be reciprocal of each other then b = (A) 2 (B) 1 (C) -1 (D) a

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**Description :** What do you think of this explanation for why perpendicualar lines have negative reciprocal slope?

**Last Answer :** I think it has potential, but I think as of now you’re taking it on faith that the lines are perpendicular. I understand your explanation about fixing them in place, but it is not proven that the x and y axes would lie through A and B when rotated. It wouldn’t be hard to add that bit on, I think.

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**Description :** If you've ever been in a non-reciprocal relationship, how have you managed to thrive and not shut down inside?

**Last Answer :** Survive through grace. Thriving may be a bit of a stretch.

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