PMMC instrument
Authored by GOVERNMENT RATH
Engineering
12th Grade
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5 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following is NOT an advantage of PMMC instruments?
Low power consumption
High accuracy
Measure both AC and DC
Linear or uniform scale
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How can a PMMC instrument be adapted to measure alternating current (AC)?
By connecting a rectifier circuit
By increasing the coil resistance
By increasing the strength of the magnets
By reducing the air gap
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What material is typically used for the moving coil in a PMMC instrument?
Copper
Alluminium
Iron
Steel
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What type of damping is used in PMMC instruments?
Air friction damping
Fluid friction damping
None
Eddy current damping
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
PMMC instruments are best suited for measuring:
High-frequency AC signals
Only DC signals
Low frequency AC signal
Both AC and DC
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