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Study MCQ
Electronics Mechanic
AC AND DC MEASURING INSTRUMENTS
Set 4
Set 4
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Q4133
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Which meter movement is not affected by stray magnetic fields?
A
PMMC meter
B
Thermo couple meter
C
MI meter - attraction type
D
MI meter - Repulsion type
Q4134
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Which characteristics enable the deflection of pointer in the attraction type moving iron meter?
A
Weight of the soft iron pieces
B
Deflection is inversely proportional to current
C
Deflection is independent of current direction
D
Deflecting and controlling torques are
Q4135
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Which band of frequency is used for RADAR in frequency spectrum allotted by the International Telecommunication Union (ITU)?
A
ITU band - 4
B
ITU band - 6
C
ITU band - 8
D
ITU band - 10
Q4136
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Which control is used in repulsion type moving iron instrument to keep the pointer at zero position?
A
Spring control
B
Air damping control
C
Magnetic repulsion control
D
Magnetic attraction control
Q4137
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Which frame is used for winding the coil of PMMC meter?
A
Steel frame
B
Wooden frame
C
Ceramic frame
D
Aluminium frame
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