This set of Electrical Measurements & Measuring Instruments Multiple Choice Questions & Answers (MCQs) focuses on “Bridge Balance Equation”.

1. Bridge balance equation for magnitude is given by which of the following relation?

a) Z_{1} Z_{4} = Z_{2} Z_{3}

b) Z_{1} Z_{2} = Z_{3} Z_{4}

c) Z_{2} Z_{4} = Z_{1} Z_{3}

d) Z_{1} Z_{3} = Z_{2} Z_{4}

2. Angular balance equation is given by which of the following relation?

a) θ_{1} × θ_{4} = θ_{2} × θ_{3}

b) θ_{1} + θ_{4} = θ_{2} + θ_{3}

c) θ_{2} + θ_{4} = θ_{1} + θ_{3}

d) θ_{2} × θ_{4} = θ_{1} × θ_{3}

3. Bridge must be balanced for ________

a) magnitude

b) angle

c) magnitude and angle

d) power

4. Phase angle is based on _______

a) source

b) detector

c) power

d) impedance

5. For inductive impedances, the phase angle is _______

a) positive

b) negative

c) zero

d) exponential

6. For capacitive impedances, the phase angle is _______

a) tangential

b) negative

c) positive

d) logarithmic

7. Bridge balance equation for magnitude in terms of admittances is given by the relation.

a) Y_{1}Y_{3} = Y_{2}Y_{4}

b) Y_{1}Y_{2} = Y_{3}Y_{4}

c)Y_{1}Y_{4} = Y_{2}Y_{3}

d) Y_{1} Y_{3} = Y_{2} Y_{4}

8. When a bridge is balanced?

a) no voltage drop across the circuit

b) power dissipation is high

c) temperature of the circuit is high

d) no current flows