Bridges, Megger, Wiring types, 2 & 3 way control of loads

For the given Wheatstone's bridge if P=900 ohms, Q= 300 ohms, S= 15 ohms respectively at balance, value of Rx is

 

• 10 ohms

• 5 ohms

• 15 ohms

• 3 ohms

The Wheatstone's bridge is widely used for precision measurement of resistance:

• Less than 1 ohm

• 1 to 100 ohms

• Greater than 100 kilo ohms

Kelvin's double bridge is used to measure resistances in the range of

• Less than 1 ohm

• 1 to 100 ohms

• greater than 100 kilo ohms

Megger is used to measure resistance of

• Conductors

• Insulation of cables

_________________ is used to measure Capacitance

• Kelvin's bridge

• Maxwell's bridge

• Schering's bridge

• Wheatstone's bridge

For the given bridge circuit under balanced condition,

• PS=QR

• PQ=RS

• P/S=Q/R

• PR=QS

Under balanced condition of the given bridge,

• if p/q=P/Q, then R= PS/Q

• if p/r=P/Q then R=PS/Q

• if p/q=P/Q then R=PQ/S

Under balanced condition of the given Maxwell's bridge,

• Z₁Z₄=Z₂Z₃

• Z₁Z₂=Z₄Z₃

• Z₁Z₃=Z₂Z₄

Under balanced condition of the given Maxwell's bridge,

• R₁R₄=R₂R₃, L₁/C₄=R₂R₃

• R₁R₄=R₂R₃, L₁C₄=R₂R₃

Under balanced condition of the given Schering's bridge,

• r₂/C₄=R₃/C₁, R₄/C₂=R₃/C₁

• r₂=R₃C₄/C₁, C₂=R₄C₁/R₃

• Both options are true