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In an Anderson bridge, the unknown inductance is measured in terms of known capacitance and resistance.

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Description :

Answer :

If an inductance is connected in one arm of bridge and resistances in the remaining three arms the bridge cannot be balanced.

Description :

The bridge method commonly used for finding mutual inductance is (A) Heaviside Campbell bridge (B) Schering bridge (C) De Sauty bridge (D) Wien bridge

Answer :

The bridge method commonly used for finding mutual inductance is Heaviside Campbell bridge

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

Answer :

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

Description :

A dummy strain gage is used in a quarter bridge strain gage circuit to :  (A) compensate for changes in temperature and lead wire resistance  (B) produce more output voltage from the bridge  (C) increase the sensitivity of the bridge  (D) compensate lead wire resistance only

Answer :

A dummy strain gage is used in a quarter bridge strain gage circuit to : compensate for changes in temperature and lead wire resistance 

Description :

The bridge most suited for measurement of a four-terminal resistance in the range of 0.001 Ohm to 0.1 Ohm (A) Wien’s bridge (B) Kelvin double bridge (C) Maxwell’s bridge (D) Shering Bridge

Answer :

The bridge most suited for measurement of a four-terminal resistance in the range of 0.001 Ohm to 0.1 Ohm (A) Wien’s bridge (B) Kelvin double bridge (C) Maxwell’s bridge (D) Shering Bridge

Description :

Answer :

In a Schering bridge the potential of the detector above earth potential is a few volts only.

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Answer :

For measurement of inductance having high value, we should use Hay's bridge.

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Answer :

For measurement of mutual inductance we can use Heaviside bridge.

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Answer :

For measurements on high voltage capacitors, the suitable bridge is Schering bridge.

Description :

A universal RLC bridge uses?

Answer :

A universal RLC bridge uses Maxwell Wein bridge for measurement of inductance and modified De Santy's bridge for measurement of capacitance.

Description :

Self induced voltage across an inductance

Answer :

Self induced voltage across an inductance

Description :

In a 230 V, 50 Hz single-phase SCR bridge converter operating at a firing delay angle, α and with large R-L load, the input source current is (A) sinusoidal current (B) constant dc current (C) continuous rectangular pulses (D) alternating rectangular pulses

Answer :

In a 230 V, 50 Hz single-phase SCR bridge converter operating at a firing delay angle, α and with large R-L load, the input source current is alternating rectangular pulses

Description :

State the impact of inductance and resistance on transmission line performance

Answer :

Impact of inductance on transmission line: 1) It causes IXL drop in transmission line which affects regulation. 2) It is the only parameter which decides power transmission capacity of line i. ... is very small, it causes losses, temperature rise& poor voltage regulation so it cannot be neglected

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Answer :

Inductance

Description :

effect of inductance and capacitance on performance of transmission line.

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?

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 inductance formula

Answer :

Self inductance formula

Description :

Describe with working of LCR meter for measurement of inductance. 

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 :

For 11kV line the inductance per km per phase will be of the order of:  (A) 1 H (B) 0.1 H (C) 1 mH (D) 0.1 mH

Answer :

For 11kV line the inductance per km per phase will be of the order of: 1 mH

Description :

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

Answer :

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

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.

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?

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?

Answer :

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

Description :

Inductance of coil?

Answer :

Inductance of coil increases with the increase in supply frequency.

Description :

Inductance of a coil Varies?

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?

Answer :

Inductance affects the direct current flow at the time of turning on and off.

Description :

What is the reciprocal of inductance?

Answer :

This term is not exist

Description :

Answer :

Unit of inductance is Henry denoted by capital H .

Description :

Draw circuit diagram of symmetrical configuration of bridge converter.

Answer :

circuit diagram of symmetrical configuration of bridge converter

Description :

List out advantages and disadvantages of bridge rectifier.

Answer :

Advantages :  1. Bridge rectifier can be used in applications allowing floating output terminals i.e. not output terminal is grounded.  2. The need of center-tapped transformer is eliminated.  ... The value of the diodes used should be precise , else there will be an error in rectification

Description :

Draw full bridge & half bridge configuration with common cathode.

Answer :

Half Bridge Configuration: Full Bridge Configuration: 

Description :

 operation of whetstone bridge. 

Answer :

A Wheatstone bridge is widely used to measure the electrical resistance. This circuit is built with two known resistors, one unknown resistor and one variable resistor connected in the form of bridge. ... using a Wheatstone Bridge the unknown electrical resistance value can easily measure.

Description :

tern null as it applies to bridge measurement.

Answer :

Null measurements balance voltages so that there is no current flowing through the measuring device and, therefore, no alteration of the circuit being measured. Null measurements are generally more ... the use of standard voltmeters and ammeters, and they still have limits to their precision.

Description :

Give the operation of single phase full wave bridge controlled converter with RL load with a neat diagram. Also draw its waveform.

Answer :

Single phase fully control bridge converter with RL load: 1. During positive half cycle of input voltage, T1 and T2 are forward biased and during negative half cycle, T3 and T4 are forward biased. Therefore, T1-T2 ... cycle till the firing of next pair of SCRs as shown in the waveform.

Description :

Wheatstone bridge

Answer :

Wheatstone bridge

Description :

Which of the following is true with respect to Wien Bridge? A) It does not require equal values of R or C  B) It requires that R and C values of all components must be equal C) It requires that all resistors should have equal values D) None of these

Answer :

Which of the following is true with respect to Wien Bridge? A) It does not require equal values of R or C  B) It requires that R and C values of all components must be equal C) It requires that all resistors should have equal values D) None of these

Description :

The no-load speed of a single-phase SCR bridge converter fed separately excited dc motor operating at a firing delay angle, α and flux, Φ (A) directly proportional to α and Φ (B) inversely proportional to α and Φ (C) directly proportional to α and inversely proportional to Φ (D) directly proportional to Φ and inversely proportional to α

Answer :

The no-load speed of a single-phase SCR bridge converter fed separately excited dc motor operating at a firing delay angle, α and flux, Φ directly proportional to α and inversely proportional to Φ

Description :

A 230 V, 50 Hz phase controlled single-phase full-controlled SCR bridge converter draws 15 A constant dc current. If the source inductance is 3 mH, the drop in dc output voltage is (A) 4.5 V (B) 6.75 V (C) 9 V (D) 13.5 V

Answer :

A 230 V, 50 Hz phase controlled single-phase full-controlled SCR bridge converter draws 15 A constant dc current. If the source inductance is 3 mH, the drop in dc output voltage is 9 V

Description :

The bridge most suited for accurate measurement of relative permittivity of dielectric materials is (A) Carey Foster Bridge (B) Anderson’s bridge (C) Heaviside Bridge modified by Campbell. (D) Schering Bridge.

Answer :

The bridge most suited for accurate measurement of relative permittivity of dielectric materials is Schering Bridge.

Description :

Explain three phase bridge inverter.

Answer :

Three phase bridge inverter: Three phase bridge inverter converts DC voltage input to three-phase variable frequency variable voltage output. DC voltage source can be a DC source or output of the rectifier. ... in proper sequence. The switch may be thyristor or IGBT etc.

Description :

Explain the operation of full bridge converters with their different operating modes. State its advantages and disadvantages.

Answer :

Full bridge converter: Full bridge converter provides isolation between input and output. Full bridge converter is used for step up or step down the input voltage. Full bridge converter consists of four power semiconductor ... Require filter on both input and output.

Description :

explain blanking times for Bridge circuit?

Answer :

Blanking time is provided by driver circuit to power switch. Blanking time is important because the turn on input of one transistor must be delayed with turn off input of another transistor if both ... are connected in one converter leg. This blanking time helps in avoiding cross conduction.

Description :

Answer :

Anderson Bridge is used to measure: L.

Description :

An A.C. voltage is impressed across a pure resistance of 3.5 ohms in parallel with a pure inductance of impedance of 3.5 ohms?

Answer :

An A.C. voltage is impressed across a pure resistance of 3.5 ohms in parallel with a pure inductance of impedance of 3.5 ohms, both resistance and inductance carry equal currents.

Description :

Hay bridge is suitable for measuring following type of inductance (a) having Q greater than 10. (b) having Q less than 10. (c) having any value of Q. (d) having phase angle of reactance very large. 

Description :

Answer :

For measuring an unknown electrical quantity, select the meter with Highest range and work down.

Description :

A Wheatstone bridge requires a change of 10 Ω in the unknown arm of the bridge to produce a change in deflection of 5 mm of the galvanometer. The sensitivity of the galvanometer will be  A) 0.5 mm/ Ω B) 2 Ω/ mm C) Either A or B D) 5 mm/ Ω

Description :

The bridge used to measure the dielectric loss of an insulator is: A) Anderson bridge B) Wien’s bridge C) Schering bridge D) Any of the above

Answer :

C)Schering bridge

Description :

 Maxwell's inductance - capacitance bridge is used for measurement of Inductance of: -  a) Low Q coils b) Medium Q coils c) High Q coils d) Low and medium Q coils

Answer :

A

Description :

With the help of which bridge are the capacitance and dielectric loss of a capacitor generally measured ?

Answer :

With the help of Schering bridge are the capacitance and dielectric loss of a capacitor generally measured.

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