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 Measurements & Measuring Systems 30 Flashcards |
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Which type of electrical instrument is known for providing the value of parameters under measurement in terms of the instrument itself? |
Card: 1 / 30 |
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Absolute Instrument |
Card: 2 / 30 |
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Fill in the blank: PMMC type instruments are used only for ______ measurements. |
Card: 3 / 30 |
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DC |
Card: 4 / 30 |
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True or False: Induction type instruments can be used for measuring both AC and DC. |
Card: 5 / 30 |
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False. Induction type instruments are used only for AC measurements. |
Card: 6 / 30 |
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Riddle: I help display the flow of electricity, but I must be connected in series; if connected in parallel, I may cause a short-circuit. What am I? |
Card: 7 / 30 |
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Ammeter |
Card: 8 / 30 |
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What is the primary advantage of using a null deflection instrument over a deflecting instrument? |
Card: 9 / 30 |
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Higher accuracy due to zero deflection operational power consumption. |
Card: 10 / 30 |
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Fill in the blank: The deflecting torque in an indicating instrument is proportional to the ______ under measurement. |
Card: 11 / 30 |
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Quantity |
Card: 12 / 30 |
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Which type of damping is used in PMMC instruments due to the strong operating field? |
Card: 13 / 30 |
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Eddy Current Damping |
Card: 14 / 30 |
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True or False: Voltmeters must be connected in series with the circuit to measure voltage. |
Card: 15 / 30 |
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False. Voltmeters must be connected in parallel. |
Card: 16 / 30 |
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What mechanism provides control torque in spring control mechanisms? |
Card: 17 / 30 |
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The spring constant (k) times the angle of deflection (θ). |
Card: 18 / 30 |
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Fill in the blank: The type of electrical instrument that integrates parameters over time is known as an ______ instrument. |
Card: 19 / 30 |
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Integrating |
Card: 20 / 30 |
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Riddle: I store signals digitally and can keep them for years, converting them back from bits when needed. What am I? |
Card: 21 / 30 |
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Digital Storage Oscilloscope (DSO) |
Card: 22 / 30 |
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What type of instrument is used for measuring both AC and DC voltage? |
Card: 23 / 30 |
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Electrostatic Type Instrument |
Card: 24 / 30 |
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True or False: The control spring in a PMMC instrument only provides controlling torque. |
Card: 25 / 30 |
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False. The control spring also leads the current into the system. |
Card: 26 / 30 |
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What is the primary function of the grid in a cathode ray oscilloscope? |
Card: 27 / 30 |
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To control the number of electrons in the beam, affecting the intensity of the spot on the screen. |
Card: 28 / 30 |
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Fill in the blank: In multi-range ammeters, ______ shunts can be used to provide different measurement ranges. |
Card: 29 / 30 |
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Separate |
Card: 30 / 30 |
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Completed! Keep practicing to master all of them. |
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