# The rate of rise of current through an inductive coil is maximum?

The rate of rise of current through an inductive coil is maximum?

The rate of rise of current through an inductive coil is maximum at the start of the current flow.

## Related questions

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 : In a pure inductive circuit if the supply frequency is reduced to 1/2, the current will?

Last Answer : In a pure inductive circuit if the supply frequency is reduced to 1/2, the current will be doubled.

Description : Pure inductive circuit takes power from the A.C. line when?

Last Answer : It takes power when voltage decreases and current increases.

Description : In a purely inductive circuit?

Last Answer : In a purely inductive circuit actual power is zero.

Description : In a pure inductive circuit?

Last Answer : Voltage lagging in inductor

Description : Power factor of an inductive circuit is usually improved by connecting capacitor to it in?

Last Answer : Power factor of an inductive circuit is usually improved by connecting capacitor to it in parallel.

Description : Time constant of an inductive circuit?

Last Answer : Time constant of an inductive circuit increases with increase of inductance and decrease of resistance.

Description : Pure inductive circuit?

Last Answer : Pure inductive circuit takes power from the line during some part of the cycle and then returns back to it during other part of the cycle.

Description : With rise in temperature the resistance of semi-conductors?

Last Answer : With rise in temperature the resistance of semi-conductors decreases.

Last Answer : The inductive interference between power and communication line can be minimized by transposition of the power line, transposition of the communication line.

Description : Name the material used for :- (i) Moving coil (ii) Permanent magnet in PMMC instrument.

Last Answer : (i) Material used for Moving coil: Copper, Aluminum( some times)  (ii) Permanent magnets are made of special alloys such as :  Aluminum-Nickel-Cobalt (Alnicos)  Strontium-Iron  Neodymium-Iron-Boron  Samarium-Cobalt.

Description : State the material used for moving coil and former for PMMC instruments.

Last Answer : Material Used for Moving Coil and Former for PMMC Instruments:  Material used for moving coil: Copper  Material used for Former: Aluminium

Description : A Peterson coil is ________ A) An arc generating coil B) An arc suppressing coil C) An arc inducing coil D) None of these

Last Answer : A Peterson coil is An arc suppressing coil

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 : 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 : 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 : What is the difference between a coil and an inductor?

Last Answer : Inductor is covering with insulating material is called coil.so they differentiate between coil and inductor.

Description : The unit heat rate characteristic of a thermal power unit shows :  (A) Heat input per kWh of output versus the megawatt output of unit  (B) Heat input per kW of output versus the megawatt output ... hour output of unit  (D) Heat input per kW of output versus the megawatt hour output of unit

Last Answer : The unit heat rate characteristic of a thermal power unit shows : Heat input per kWh of output versus the megawatt output of unit

Description : What do you mean by coil?

Last Answer : Ans. Having one or more turns connected in series is called coil.

Description : State the function of overload coil and No volt coil in dc motor starter.

Last Answer : Function of Overload Coil: When DC motor is overloaded, the overload coil carries the overload current and produces strong magnetic field to attract a plunger, which short the terminals of ... dc motor is prevented from restarting automatically on recovery of supply without starter and protected.

Description : The purpose of the restraining coil in a biased differential relay is  (A) To reduce CT saturation during fault.  (B) To increase the sensitivity of the relay.  (C) To match the transformation ratio.  (D) To limit the spill current through the relay during heavy external fault.

Description : Permanent magnet moving coil instruments are used for

Last Answer : PMME are mostly used for measuring voltage and current.

Description : Peterson coil is used for :  (A) shunt compensation of lines (B) grounding of system neutral (B) reduce fault currents (D) connecting interconnected systems

Last Answer : Peterson coil is used for : grounding of system neutral

Description : A moving coil of meter has 100 turns, and a length and depth of 10mm and 20mm respectively. It is positioned in a uniform radial flux density of 200 mT. The coil carrier current capacity is 50 mA. The torque on the coil is

Last Answer : A moving coil of meter has 100 turns, and a length and depth of 10mm and 20mm respectively. It is positioned in a uniform radial flux density of 200 mT. The coil carrier current capacity is 50 mA. The torque on the coil is 200µNm

Description : The self inductance of a coil can be measured using (A) Wien’s Bridge (B) Schering Bridge (C) Anderson’s Bridge (D) Wheatstone Bridge

Last Answer : The self inductance of a coil can be measured using Anderson’s Bridge

Description : A PMMC instrument has FSD of 100 μA and a coil resistance of 1 kΩ. To convert the instrument into an ammeter with full scale deflection of 100 mA, the required shunt resistance is (A) 1 Ω (B) 1.001 Ω (C) 0.5 Ω (D) 10 Ω

Last Answer : A PMMC instrument has FSD of 100 μA and a coil resistance of 1 kΩ. To convert the instrument into an ammeter with full scale deflection of 100 mA, the required shunt resistance is 1.001 Ω

Description : A moving coil meter has a resistance of 3 Ω and gives full scale deflection with 30 mA. To measure voltage up to 300 V, the external resistance to be connected in series with the instrument is (A) 9997 Ω (B) 10000 Ω (C) 997 Ω (D) 10003 Ω

Last Answer : A moving coil meter has a resistance of 3 Ω and gives full scale deflection with 30 mA. To measure voltage up to 300 V, the external resistance to be connected in series with the instrument is 9997 Ω

Description : The potential coil of a single phase dynamometer wattmeter has 4840 Ohm resistance. Voltage across the load is 220 V. With the potential coil connected on the load side, the meter indicates 100 W. Approximate percentage error due to wattmeter connection is (A) 11% (B) 9% (C) 1.1% (D) 3%

Last Answer : The potential coil of a single phase dynamometer wattmeter has 4840 Ohm resistance. Voltage across the load is 220 V. With the potential coil connected on the load side, the meter indicates 100 W. Approximate percentage error due to wattmeter connection is 11%

Last Answer : In a low power factor wattmeter the compensating coil is connected in series with pressure coil.

Last Answer : In a low power factor wattmeter the pressure coil is connected to the load side of the current coil.

Last Answer : The multiplier and the meter coil in a voltmeter are in series.

Last Answer : A moving-coil permanent-magnet instrument can be used as flux-meter by eliminating the control springs.

Last Answer : A moving-coil permanent-magnet instrument can be used as ammeter by using a low resistance shunt.

Last Answer : Armature coil is short circuited by brushes when it lies along neutral axis.

Last Answer : Open circuited armature coil of a D.C. machine is identified by the scarring of the commutator segment to which open circuited coil is connected and indicated by a spark completely around the commutator.

Last Answer : In a shaded pole motor, the shading coil usually consist of a single turn of heavy copper wire which is short-circuited and carries only induced current.

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.

Description : How to Slow Your Heart Rate ?

Last Answer : How to Slow Your Heart Rate Tachycardia or palpitation is a condition where your heart rate is higher than the normal value of 60-100 beats per minute (bpm) . This is usually a symptom ... An early detection of any illness is very important to prevent it from getting worse and avoid complications.

Description : How to Calculate Your Heart Rate ?

Last Answer : How to Calculate Your Heart Rate The heart rate reflects your current state of health, more specifically, it shows your fitness level and at some point, your metabolic rate. It is only a rough estimate ... often feel light, active, and happy each time, since they are clear signs of good health.

Description : What are the different heart rate monitors and how to make a choice?

Last Answer : What are the different heart rate monitors and how to make a choice? The time when only professional athletes could afford training with a heart rate monitor is already in the past. Today literally anyone ... is that the device can withstand dives to a depth of more than 10 meters. Happy choice!

Description : Draw venture meter and write steps to measure flow rate.

Last Answer : Venturi meter consists of three sections that is converging section, throat section and diverging section. The flow is introduced to the meter through the inlet with diameter D' . The inclined angle ... to 15o . Flow rate is proportional to the square root of the differential pressure.

Description : Define : (i) CMMR ii) Slew rate

Last Answer : (i) CMRR:- The CMRR is defined as the ratio of the powers of the differential gain over the common-mode gain, measured in positive decibels (thus using the 20 log rule): As differential gain should ... respond to an abrupt change of input level It is measured as a voltage change in a given time.

Description :  If a signal band limited to fm is sampled at a rate less than 2fm, then the constructed signal will be A) Large in amplitude B) Small in amplitude C) Distorted D) Distortion less

Last Answer :  If a signal band limited to fm is sampled at a rate less than 2fm, then the constructed signal will be Distorted

Description : Liquid flow rate is measured using (A) a pirani gauge (B) a pyrometer (C) an orifice plate (D) a bourdon tube

Last Answer : Liquid flow rate is measured using an orifice plate

Last Answer : The rate of acceleration on suburban or urban service is in the range 1.6 to 4.0 km phps.

Last Answer : In Hopknison demand rate or two part tariff the demand rate or fixed charges are dependent upon the maximum demand of the consumer.

Description : Explain data transfer mechanism in I2C protocol. Compare it with CAN and USB protocol based on bit rate and area of applications.

Last Answer : I2C (Inter-Integrated Circuit): I2C stands for Inter-Integrated Circuit. I2C is a serial protocol. It was developed by Philips Semiconductor. I2C bus have two communication lines. One is serial data ( ... Mbps this is used for lower speed devices. Using USB we can connect upto 127 devices.

Description : When the voltage across a battery is measured using a D.C potentiometer, the reading shows 1.08 V. But when the same voltage is measured using a Permanent Magnet Moving Coil (PMMC) voltmeter, the voltmeter reading shows 0.99 ... resistance of the battery, in Ohm , is (A) 150 (B) 100 (C) 50 (D) 200

Last Answer : When the voltage across a battery is measured using a D.C potentiometer, the reading shows 1.08 V. But when the same voltage is measured using a Permanent Magnet Moving Coil (PMMC) voltmeter, ... resistance of the voltmeter is 1100 Ohm , the internal resistance of the battery, in Ohm , is 100

Description : In an AC circuit, the inductive reactance of a coil varies with the _______________. A. resistance of the circuit B. frequency of the circuit C. voltage of the circuit D. current of the circuit