Test and Measurements

91. Which is the best type of meter movement?

1. Iron-wave
2. Dynamometer
3. D' Arsonval
4. Moving iron

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92. Which is the most commonly used induction type instrument?

1. Induction voltmeter
2. Induction watt-hour meter
3. Induction wattmeter
4. Induction ammeter

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93. Which movement is the most expensive?

1. D' Arsonal movement
2. Dynamometer
3. Moving-iron
4. Iron-wave

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94. Which of the following bridges measures dc resistance?

1. Wheatstone
2. Maxwell bridge
3. Hay bridge
4. Schering bridge

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95. Which of the following extends the range of a moving-iron ac ammeter?

1. A shunt
2. A multiplier
3. Changing number of turns of operating coil
4. A series

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96. Which of the following forces does not act on the moving systems of analog instruments?

1. A deflecting force
2. A controlling force
3. A damping force
4. An electrostatic force

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97. Which of the following is a dc bridge that is very useful for making extremely accurate voltage measurements?

1. Wheatstone bridge
2. Potentiometer bridge
3. Kelvin bridge
4. Owen bridge

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98. Which of the items below describes an absorption meter's usage?

1. Check the output frequency of a transmitter
2. Monitors the output current of a receiver
3. Monitors the frequency ratio of a device
4. Frequency generator

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99. Which of the voltmeter is used for measuring high direct voltage (say 10kV)?

1. Permanent-magnet moving coil
2. Hot-wire
3. Electrostatic
4. Moving iron

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100. Which part of the following is not a basic part of a CRT?

1. Electron gun
2. Focusing and accelerating elements
3. Horizontal and vertical deflecting plates
4. Sawtooth generator

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