**Description :** If the permeability of the core of a coil increases, what happens to (a) inductance and (b) true power in the circuit?

**Last Answer :** (a) Inductance increases; (b) true power decreases.

**Description :** If inductance increases in a series LR circuit, what happens to true power?

**Last Answer :** It decreases.

**Description :** The inductance of a power transmission line increases with (A) decrease in line length. (B) increase in conductor diameter. (C) increase in spacing between phase conductors. (D) increase in load current carried by conductors.

**Last Answer :** The inductance of a power transmission line increases with increase in spacing between phase conductors.

**Description :** Which of the following statements concerning AC circuits is correct? A. The power factor of a resistive circuit is always zero. B. True power in an inductive circuit always equals apparent power. ... . D. Total opposition to the flow of alternating current depends upon the amount of reactive power.

**Last Answer :** Answer: C

**Description :** An increase in which of the listed conditions will increase the speed of a synchronous motor? A. Frequency B. Voltage C. Armature current D. Inductance

**Last Answer :** Answer: A

**Description :** If the length of a Hertz dipole is decreased A. its resonant frequency will be lowered its distributed inductance will be increased B. its distributed inductance will be decreased C. its ... frequency will be increased D. its distributed capacitance between the antenna and ground will be increased.

**Last Answer :** C. its resonant frequency will be increased

**Description :** Refers to an ac bridge for measuring the inductance and Q of an inductor in terms of resistance, frequency and a standard capacitance.

**Last Answer :** hay bridge

**Description :** An a.c series circuit has resistance of 10ohm, inductance of 0.1H and capacitance of 10µf, voltage applied to circuit is 200V. find (i) Resonant frequency (ii) Current at resonance (iii) Power at resonance

**Last Answer :** Solution: For RLC series circuit

**Description :** effect of inductance and capacitance on performance of transmission line.

**Last Answer :** Following are the effect on performance of transmission line: 1. Due to inductance (L) voltage drop in transmission line produces. 2. Capacitor (C) draws charging current ... , transmission line efficiency, voltage regulation & also power factor of transmission line gets affected.

**Description :** What is inductance?

**Last Answer :** Inductance is the property of Material by which it opposes the any change of magnitude or direction of electric current passing through the conductor. The inductance is denoted by L. The unit of inductance is Henry (H).

**Description :** Self induced voltage across an inductance

**Last Answer :** Self induced voltage across an inductance

**Description :** State the effects of errors in dynamometer type wattmeter due to i) pc- inductance ii) pc- capacitance iii) mutual inductance iv) Connection.

**Last Answer :** Errors in wattmeter: i) pc - inductance: Pressure coil inductance causes wattmeter to read more power than actual . ii) pc-capacitance: The wattmeter reads less power. iii) ... iv) Connection: In uncompensated wattmeter , the reading of wattmeter includes the powerloss in coils.

**Description :** Describe with working of LCR meter for measurement of inductance.

**Last Answer :** working of LCR:- A LCR meter (Inductance (L), Capacitance (C), and Resistance (R) test equipment used to measure the inductance, capacitance and, resistance of a component. It works on the ... in parallel (as would be encountered in measuring a capacitor with a leaky dielectric) [Q setting ]

**Description :** Define :i) Self inductance ii) Coefficient of self induction

**Last Answer :** i) Self-inductance: It is the property by virtue of which a coil opposes change in current flowing through it by inducing an emf in it such that its effect is to circulate current (induced current) that produces a magnetic field ... N = di/dt N = Φ/I It is expressed in henry.

**Description :** A coil of 500 turns is linked with a flux of 25 mwb, when carries a current of 12.5A. Calculate the value of self-inductance.

**Last Answer :** Ans: Self-Inductance: L = NΦ /I = 500 × 25 × 10-3 / 12.5 = 1 H

**Description :** In practice, a current source inverter consists of an AC/ DC converter with a large inductance ‘L’ in the output. This inductance maintains a ……… …………through the switching devices over short interval of time. A) constant current B) constant voltage C) constant power D) none of the (A), (B), (C)

**Last Answer :** In practice, a current source inverter consists of an AC/ DC converter with a large inductance ‘L’ in the output. This inductance maintains a constant current through the switching devices over short interval of time.

**Description :** An iron cored inductance coil can be modelled, over a normal operating range of networks ,as A) non-Linear bilateral element B) linear bilateral element C) linear time varying element D) non-linear time invariant element

**Last Answer :** An iron cored inductance coil can be modelled, over a normal operating range of networks ,as linear bilateral element

**Description :** These self inductance of a circuit is defined as twice the work done against the induced e.m.f. on establishing unit current in the coil. If the current to be established in the coil is doubled, the work done ... induced e.m.f. will be 1. Doubled 2. Halved 3. four times 4. Quarter times

**Last Answer :** These self inductance of a circuit is defined as twice the work done against the induced e.m.f. on establishing unit current in the coil. If the current to be established in the coil is doubled, the work done against the induced e.m.f. will be four times

**Description :** lt the length, number of turns and area of a coil are doubled, the inductance of the coil

**Last Answer :** lt the length, number of turns and area of a coil are doubled, the inductance of the coil is quadrupled

**Description :** A coil of inductance 240 mH and resistance 75 Ohm is connected in parallel with a capacitor across a 30 V, variable frequency supply. The current drawn by the circuit is found to be minimum when the supply frequency is 1 kHz. The ... (A) 40, 400 Hz (B) 10, 100 Hz (C) 20, 50 Hz (D) 50, 20 Hz

**Last Answer :** A coil of inductance 240 mH and resistance 75 Ohm is connected in parallel with a capacitor across a 30 V, variable frequency supply. The current drawn by the circuit is found to be minimum ... supply frequency is 1 kHz. The approximate values of Q-factor and bandwidth are, respectively 20, 50 Hz

**Description :** A network consists of several inductances connected in parallel. The equivalent inductance of the network is given by (A) the sum of the individual inductances. (B) the reciprocal of the ... of individual inductances. (D) the reciprocal of the sum of reciprocals of individual inductances.

**Last Answer :** A network consists of several inductances connected in parallel. The equivalent inductance of the network is given by the reciprocal of the sum of reciprocals of individual inductances.

**Description :** What is the value of Inductance of a coil that induces 20 V when the current through the coil changes from 12 to 20 A in 2 seconds? A. 2 H B. 3 H C. 4 H D. 5 H

**Last Answer :** 5 H is the value of Inductance of a coil that induces 20 V when the current through the coil changes from 12 to 20 A in 2 seconds.

**Last Answer :** An undesirable side effect of motional inductance of large conduction specimens is eddy currents.

**Description :** A series RLC circuit has a resistance of 50 , inductance of 0.4H and a capacitor of 10µF. The circuit is connected across a 100V supply. The resonance frequency and the current through the resistance are

**Last Answer :** A series RLC circuit has a resistance of 50 , inductance of 0.4H and a capacitor of 10µF. The circuit is connected across a 100V supply. The resonance frequency and the current through the resistance are 500 rad/s and 2A.

**Description :** Two similar coils have self inductance of 1 mH each. Coefficient of coupling is 0.5. The mutual inductance M is

**Last Answer :** Two similar coils have self inductance of 1 mH each. Coefficient of coupling is 0.5. The mutual inductance M is 0.5 mH.

**Last Answer :** Inductance coils are basically designed for High Q.

**Description :** The initial rate of rise of current through a coil of inductance 10 H when suddenly connected to a D.C. supply of 200 V is_______Vs.

**Last Answer :** The initial rate of rise of current through a coil of inductance 10 H when suddenly connected to a D.C. supply of 200 V is 20 Vs

**Description :** When both the inductance and resistance of a coil are doubled the value of?

**Last Answer :** When both the inductance and resistance of a coil are doubled the value of time constant remains unchanged.

**Description :** The inductance of a coil can be increased by?

**Last Answer :** The inductance of a coil can be increased by choosing core material having high relative permeability.

**Description :** If resistance is 20 Q. and inductance is 27 in a R-L series circuit, then time constant of this circuit will be?

**Last Answer :** 0.1s

**Description :** Inductance of coil?

**Last Answer :** Inductance of coil increases with the increase in supply frequency.

**Description :** Inductance of a coil Varies?

**Last Answer :** Inductance of a coil Varies as directly as the cross-sectional area of magnetic core and inversely as the length of the iron path.

**Description :** Inductance affects the direct current flow?

**Last Answer :** Inductance affects the direct current flow at the time of turning on and off.

**Description :** In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value?

**Last Answer :** In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value will increase the selectivity of the circuit.

**Last Answer :** Resistance: This could be defined as the opposition or retarding force to the flow of current in a circuit. It is measured in Ohms. Capacitance: The ability of a system of electrical conductors and insulators ... due to a rate of change of current in the circuit or coil. It's unit is Henry.

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

**Last Answer :** This term is not exist

**Last Answer :** Unit of inductance is Henry denoted by capital H .

**Last Answer :** 1)no of turns 2)area of coil 3)length of coil 4)thickness of conductor

**Last Answer :** The size of the induced electromotive force is proportional to the rate of change of theelectric current. ... The self-inductance of a coil, or simply its inductance, may thus be thought of as electromagnetic inertia, a property that opposes changes both in currents and in magnetic fields.

**Description :** The frequency of the Trichel’s pulses increases by: a. Increasing the gas pressure b. Decreasing the gas pressure c. Increasing the temperature d. Unaffected by any one of the above

**Last Answer :** The frequency of the Trichel’s pulses increases by: a. Increasing the gas pressure b. Decreasing the gas pressure c. Increasing the temperature d. Unaffected by any one of the above

**Description :** A sine wave voltage is applied across an inductor. When the frequency of the voltage is decreased, the current decreases.

**Last Answer :** The question seems to be wrong. Increase in frequency would actually decrease the current through the Inductor. This happens because inductive reactance Xl is directly proportional to frequency. And if frequency increases the value of Xl would ... vice versa. Xl= 2*pi*f*L I=E/Z Z=sqrt(R^2+Xl^2)

**Description :** On what subject does inductance in transmission line depend ?

**Last Answer :** a) On the line b) Conductor spacing c) Conductor radius

**Description :** What is the effect of resistance , inductance and capacitance in transmission line ?

**Last Answer :** These 3 factors create voltage drop and power loss of the line. The inductive reactance creates a voltage drop across the line and the capacitance creates a charging current.

**Last Answer :** no Conductive The middle With Variable Current Of flow Due Generated Magnetic Of the field Strength Of change As a result 3 In the conductor Voltage Obsessed To be Affordability Inductance To say Is. And That said To the conductor Inductor To say Is.

**Last Answer :** that Features Or Of religion Due As well as Two Coil Of one Of current Of change As a result In the other Voltage Obsessed Is That said Religion Or Features Mutual Inductions Says.

**Description :** A capacitor of capacity `2muF` is changed to a potential different of `12V` . It is then connected across an inductor of inductance `0.6mH` What is th

**Last Answer :** A capacitor of capacity `2muF` is changed to a potential different of `12V` . It is then ... potential difference across the capacitor is `6.0V` ?

**Description :** A coil =of inductance `L=50muH` and resistance =`0.5Omega` is connected to a battery of emf=5A. A resistance of `10Omega` is connected parallel to the

**Last Answer :** A coil =of inductance `L=50muH` and resistance =`0.5Omega` is connected to a battery of emf=5A. A resistance ... is (0.02)x in mJ. Find valuie of x.

**Description :** In the circuit shown the cell is ideal. The codil has an inductance of 2H and will blow when the current through it reaches 5a. The switch is closed a

**Last Answer :** In the circuit shown the cell is ideal. The codil has an inductance of 2H and will blow when the ... Find the time (in second)n when fuse will blow.

**Description :** The circuit shows a resistance, `R=0.01Omega` and inductance L=3mH connected toa conducting rod PQ of length l=wm which can slide on a perfectly condu

**Last Answer :** The circuit shows a resistance, `R=0.01Omega` and inductance L=3mH connected toa conducting rod PQ of length l= ... (inN-m) at t=(0.3In 2) second.