In the Wheatstone bridge shown below, the sensitivity of the bridge in terms of change in balancing voltage  for unit change in the resistance , in , is __________ (round off to two decimal places).

A balanced Wheatstone bridge ABCD has the following arm resistances: ; ;  is an unknown resistance; . The value of  and its accuracy is

Inductance is measured by

When the Wheatstone bridge shown in the figure is used to find the value of resistor , the galvanometer G indicates zero current when  and . If  is known with ± 5% tolerance on its nominal value of 100 Ω, what is the range of in ohms ?

An unbalanced DC Wheatstone bridge is shown in the figure. At what value of p will the magnitude of  be maximum?

The reading of the voltmeter (rms) in volts, for the circuit shown in the figure is __________.

In the Wien bridge oscillator circuit shown in figure, the bridge is balanced when

In the bridge circuit shown, the capacitors are loss free. At balance the value of capacitance  in microfarad is _________________.         

A strain gauge forms one arm of the bridge shown in the figure below and has a nominal resistance without any load as  Other bridge resistances are. The maximum permissible current through the strain gauge is 20mA. During certain measurement when the bridge is excited by maximum permissible voltage and the strain gauge resistance is increased by 1% over the nominal value, the output voltage V₀ in mV is

The bridge method commonly used for finding mutual inductance is

The bridge circuit shown in the figure below is used for the measurement of an unknown element. The bridge circuit is best suited when  is a

A lossy capacitor , rated for operation at 5kV, 50Hz is represented by an equivalent circuit with an ideal capacitor  in parallel with a resistor . The value of   is found to be 0.102µF and the value of .Then the power loss and  of the lossy capacitor operating at the rated voltage, respectively, are         

The Maxwell’s bridge shown in the figure is at balance. The parameters of the inductive coil are

The AC bridge shown in the figure is used to measure the impedance Z.

If the bridge is balanced for oscillator frequency f =2 kHz, then the impedance Z will be

A bridge circuit is shown in the figure below. Which one of the sequences given below is most suitable for balancing the bridge?

 and  are the opposite arms of a Wheatstone bridge as are and . The source voltage is applied across and . Under balanced conditions which one of the following is true?

The items in Group I represent the various types of measurements to be made with a reasonable accuracy using a suitable bridge. The items in Group II represent the various bridges available for this purpose. Select the correct choice of the item in Group II for the corresponding item in Group I from the following

A Kelvin double bridge is best suited for the measurement of

Match the following 

Type of bridge                                       Application

(a) Wien bridge                                      (P) Measurement of resistance

(b) Maxwell bridge                               (Q) Medium Q inductors

(c) Scherring bridge                             (R) Measurement of frequency

(d) Anderson bridge                             (S) High voltage capacitors

(e) Blumlein bridge                               (T) Low Q inductors

                                                                 (U) Insensitive to stray electrostatic fields

Match the following measuring equipment with their specific application:

(A) Kelvin double bridge                               (P) Capacitance

(B) Wind bridge                                              (Q) Self-inductance

(C) Schering bridge                                       (R) Frequency

(D) Maxwell’s bridge                                     (S) Low resistance

Figure shows a bridge for measuring the resistance and inductance of a choke.

If the resistors  can have a variation of  and C a variation of  from their nominal values, estimate the percentage error in the evaluation of R and L.