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Deflecting torque is ________ quantity under measurement in PMMC instruments.
- a)Directly proportional
- b)Inversely proportional
- c)Directly proportional to square of
- d)Inversely proportional to square of
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Deflecting torque is ________ quantity under measurement in PMMC instr...
In PMMC instruments, the deflecting torque is given by
Td = BINA
Where Td = Deflecting torque in N-m
B = Flux density, wb/m2
I = Current in the Coil, amperes
N = Number of turns of the coil
A = Effective coil area m2
Deflecting torque is directly proportional to current.
Td = BINA
Where Td = Deflecting torque in N-m
B = Flux density, wb/m2
I = Current in the Coil, amperes
N = Number of turns of the coil
A = Effective coil area m2
Deflecting torque is directly proportional to current.
Most Upvoted Answer
Deflecting torque is ________ quantity under measurement in PMMC instr...
Deflecting torque is directly proportional to the quantity under measurement in PMMC (Permanent Magnet Moving Coil) instruments. This means that as the quantity being measured increases, the deflecting torque also increases proportionally.
Explanation:
PMMC instruments are commonly used in measuring instruments such as ammeters and voltmeters. They work based on the principle of the interaction between a permanent magnet and a moving coil.
Deflecting torque is the torque produced by the interaction between the magnetic field of the permanent magnet and the current flowing through the moving coil. This torque causes the coil to rotate, and the deflection of the coil is proportional to the current passing through it.
The quantity being measured, such as current or voltage, is directly related to the current passing through the coil. Therefore, as the quantity being measured increases, the current passing through the coil also increases. This results in a stronger magnetic field and a larger deflecting torque.
In mathematical terms, the relationship between the deflecting torque (T) and the quantity being measured (Q) can be expressed as:
T ∝ Q
This means that the deflecting torque is directly proportional to the quantity being measured. If the quantity being measured doubles, the deflecting torque also doubles, and vice versa.
In conclusion, deflecting torque in PMMC instruments is directly proportional to the quantity being measured. As the quantity increases, the deflecting torque also increases proportionally. This relationship is fundamental to the operation of PMMC instruments and allows accurate measurement of various electrical quantities.
Explanation:
PMMC instruments are commonly used in measuring instruments such as ammeters and voltmeters. They work based on the principle of the interaction between a permanent magnet and a moving coil.
Deflecting torque is the torque produced by the interaction between the magnetic field of the permanent magnet and the current flowing through the moving coil. This torque causes the coil to rotate, and the deflection of the coil is proportional to the current passing through it.
The quantity being measured, such as current or voltage, is directly related to the current passing through the coil. Therefore, as the quantity being measured increases, the current passing through the coil also increases. This results in a stronger magnetic field and a larger deflecting torque.
In mathematical terms, the relationship between the deflecting torque (T) and the quantity being measured (Q) can be expressed as:
T ∝ Q
This means that the deflecting torque is directly proportional to the quantity being measured. If the quantity being measured doubles, the deflecting torque also doubles, and vice versa.
In conclusion, deflecting torque in PMMC instruments is directly proportional to the quantity being measured. As the quantity increases, the deflecting torque also increases proportionally. This relationship is fundamental to the operation of PMMC instruments and allows accurate measurement of various electrical quantities.
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Deflecting torque is ________ quantity under measurement in PMMC instruments.a)Directly proportionalb)Inversely proportionalc)Directly proportionalto square ofd)Inversely proportional to square ofCorrect answer is option 'A'. Can you explain this answer?
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