Kelvin Bridge Circuit -Multiple Choice Questions Quiz

Interactive MCQs on “Kelvin Bridge Circuit”:

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Question 1: What is the purpose of the Kelvin bridge circuit?

(a) To measure voltage
(b) To measure resistance
(c) To measure current
(d) To measure capacitance

Question 2: Which component in the Kelvin bridge circuit provides a low-resistance path for the current?

(a) Voltmeter
(b) Galvanometer
(c) Ammeter
(d) Shunt resistor

Question 3: In the Kelvin bridge circuit, what is the function of the ratio arms?

(a) To balance the bridge
(b) To measure voltage
(c) To calculate capacitance
(d) To regulate the current flow

Question 4: Which type of Kelvin bridge is commonly used to measure resistances in the milliohm range?

(a) Series Kelvin bridge
(b) Shunt Kelvin bridge
(c) Symmetrical Kelvin bridge
(d) Inductive Kelvin bridge

Question 5: What is the advantage of using a Kelvin bridge over a regular Wheatstone bridge?

(a) Higher voltage measurement range
(b) Simplicity of setup
(c) Ability to measure capacitance
(d) Reduced error due to lead resistance

Question 6: What happens to the galvanometer reading when the Kelvin bridge is balanced?

(a) The galvanometer shows a maximum deflection.
(b) The galvanometer shows a minimum deflection.
(c) The galvanometer shows no deflection (zero reading).
(d) The galvanometer reading becomes erratic.

Question 7: Which type of Kelvin bridge is more suitable for measuring resistances in the micro-ohm range?

(a) Series Kelvin bridge
(b) Shunt Kelvin bridge
(c) Symmetrical Kelvin bridge
(d) Inductive Kelvin bridge

Question 8: What is the primary application of the Kelvin bridge circuit?

(a) Audio signal processing
(b) Radiofrequency amplification
(c) High-precision resistance measurements
(d) Digital logic circuitry

Question 9: What does the 'Kelvin' in the Kelvin bridge circuit refer to?

(a) The scientist who invented the circuit
(b) The unit of temperature measurement
(c) The company that first manufactured the components
(d) The process of balancing the bridge

Question 10: What is the significance of the guard ring in the Kelvin bridge circuit?

(a) It protects the circuit from electrical surges.
(b) It prevents interference from external magnetic fields.
(c) It shields the components from physical damage.
(d) It minimizes leakage currents and ensures accurate measurements.