Related MCQs

• The accuracy of measurement by ohmmeter is very good.
• The moving iron instruments are generally repulsion type.
• Assertion (A): Many instruments use eddy current damping.Reason (R): Eddy currents set up a magnetic flux which opposes the original movement which generates them.
• The angle δ for a mica capacitor is about
• A meter has a square law scale. For 2 A current the deflection in 90°. For a deflection of 45°, the current is
• Two voltmeters 0-250 V each having resistances of 5 kΩ and 10 kΩ respectively and are connected in series. To ensure that neither of them goes beyond scale the total voltage which can be applied should be less than
• Two ammeters having resistances of 0.5 Ω and 0.25 Ω and having full scale reading of 25 A each are connected in parallel. To ensure that neither of them goes beyond scale, the total current should not be more than
• A 0-200 V voltmeter has a sensitivity of 1 kΩ per volt. The resistance of voltmeter is
• Which of the following voltmeters would you use for measuring voltage across 20 kΩ resistance?
• Two ammeters A and B both 0-10 A have internal resistance of 1 Ω and 0.5 Ω respectively. They are connected in parallel. If total current is 15 A, then