Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > Commonly used D.C. bridges are _________.a)Sc...
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Commonly used D.C. bridges are _________.
- a)Schering and Anderson
- b)Maxwell inductance and capacitance
- c)DeSauty and Wagner
- d)Wheatstone and Kelvin
Correct answer is option 'D'. Can you explain this answer?
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Commonly used D.C. bridges are _________.a)Schering and Andersonb)Maxw...
Among the given options, the Wheatstone bridge and Kelvin bridge are two commonly used D.C. bridges for precise measurements of electrical parameters.
- Wheatstone Bridge: The Wheatstone bridge is a widely used D.C. bridge circuit that is primarily used for measuring unknown resistances. It consists of four resistive arms, typically in the form of resistors, and a galvanometer. By adjusting the ratio of known resistors, the Wheatstone bridge can be balanced, allowing for accurate determination of the unknown resistance. It is widely employed in various applications, including resistance measurements and strain gauge measurements.
- Kelvin Bridge: The Kelvin bridge, also known as the Kelvin double bridge or Thomson bridge, is a modified version of the Wheatstone bridge. It is specifically designed for measuring low resistances with high accuracy. The Kelvin bridge minimizes the effects of lead resistance and contact resistance, providing more accurate measurements of low resistances. It is commonly used in applications such as measurements of contact resistance, low resistance measurements, and four-wire resistance measurements.
Options A, B, and C mentioned in the question (Schering and Anderson, Maxwell inductance and capacitance, DeSauty and Wagner) are not commonly used D.C. bridges for measurement purposes.
Therefore, the correct answer is option D: Wheatstone and Kelvin.
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Commonly used D.C. bridges are _________.a)Schering and Andersonb)Maxw...
Commonly used D.C. bridges:
- Wheatstone Bridge:
The Wheatstone bridge is a widely used circuit for measuring resistance. It consists of four resistive arms and is commonly used to measure unknown resistance values by balancing the bridge.
- Kelvin Bridge:
The Kelvin bridge, also known as the Kelvin double bridge, is used to measure low resistances accurately. It eliminates the resistance of the connecting leads, ensuring more precise measurements.
- Schering Bridge:
The Schering bridge is used to measure capacitance accurately. It consists of three arms, one of which contains an unknown capacitor that needs to be measured.
- Anderson Bridge:
The Anderson bridge is used to measure inductance accurately. It is commonly used in applications where precise measurement of inductance is required.
These D.C. bridges play a crucial role in electrical measurements and are commonly used in various applications to determine unknown values of resistance, capacitance, and inductance. Each bridge has its unique design and application, making them essential tools in the field of electrical engineering.
- Wheatstone Bridge:
The Wheatstone bridge is a widely used circuit for measuring resistance. It consists of four resistive arms and is commonly used to measure unknown resistance values by balancing the bridge.
- Kelvin Bridge:
The Kelvin bridge, also known as the Kelvin double bridge, is used to measure low resistances accurately. It eliminates the resistance of the connecting leads, ensuring more precise measurements.
- Schering Bridge:
The Schering bridge is used to measure capacitance accurately. It consists of three arms, one of which contains an unknown capacitor that needs to be measured.
- Anderson Bridge:
The Anderson bridge is used to measure inductance accurately. It is commonly used in applications where precise measurement of inductance is required.
These D.C. bridges play a crucial role in electrical measurements and are commonly used in various applications to determine unknown values of resistance, capacitance, and inductance. Each bridge has its unique design and application, making them essential tools in the field of electrical engineering.
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Commonly used D.C. bridges are _________.a)Schering and Andersonb)Maxwell inductance and capacitancec)DeSauty and Wagnerd)Wheatstone and KelvinCorrect answer is option 'D'. Can you explain this answer?
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