ELECTRICIAN 1st YEAR MODULE – Measuring Instruments July 2, 2025June 30, 2025 by admin TRANSLATE THIS QUIZ IN YOUR LANGUAGE इस प्रश्नोत्तरी का अपनी भाषा में अनुवाद करें <<12345678910111213141516171819202122232425262728293031323334353637>> 0% Question 1 of 37 1. How to achieve maximum accuracy in analog instrument measurements? Use short connecting leads Provide correct damping system Keep high input impedance Keep low input impedanceQuestion 1 of 37Question 2 of 37 2. How is creeping error controlled in energy meters? Drilling two diametrically opposite holes on disc Adjusting brake magnet position Increasing inductive load Reducing rated voltageQuestion 2 of 37Question 3 of 37 3. Which quantity is measured by an electrodynamometer type instrument? Power Current Resistance VoltageQuestion 3 of 37Question 4 of 37 4. Which instruments typically use air friction damping? Induction type instruments Moving coil instruments Dynamometer type instruments Moving iron instrumentsQuestion 4 of 37Question 5 of 37 5. What type of instrument is this? Repulsion type moving iron Permanent magnet moving coil Attraction type moving iron Dynamometer type moving coilQuestion 5 of 37Question 6 of 37 6. What happens if a CT's secondary is kept open? Secondary winding burns Primary winding burns VA capacity reduces VA capacity increasesQuestion 6 of 37Question 7 of 37 7. What type of instrument is this? Indicating instrument Absolute instrument Integrating instrument Recording instrumentQuestion 7 of 37Question 8 of 37 8. Which electrical effect does a single-phase energy meter work on? Heating effect Electrostatic effect Induction effect Chemical effectQuestion 8 of 37Question 9 of 37 9. What is the purpose of the variable resistor connected across a shunt-type ohmmeter? Adjust current to safe value Adjust pointer to zero position Minimize error in reading Avoid draining of batteryQuestion 9 of 37Question 10 of 37 10. Which instrument is an example of an integrating instrument? DC voltmeter Energy meter AC voltmeter Tangent galvanometerQuestion 10 of 37Question 11 of 37 11. Which instrument accurately measures resistances of 1 ohm and below? Series type ohm meter Megohm meter Analog multimeter Shunt type ohm meterQuestion 11 of 37Question 12 of 37 12. What is the function of soft iron core in moving coil instruments? Ensures uniform magnetic flux distribution Controls needle movement Provides maximum sensitivity Strengthens deflection forceQuestion 12 of 37Question 13 of 37 13. What type of frequency meter is this? Weston type Mechanical resonance type Ratio meter type Electro dynamic typeQuestion 13 of 37Question 14 of 37 14. Why do moving iron instruments have non-uniform scales? Deflection ∝ current² Deflection ∝ 1/current² Deflecting force ∝ 1/current Deflecting force ∝ currentQuestion 14 of 37Question 15 of 37 15. What type of scale is this? Linear scale Extended scale Non-linear scale Coarse scaleQuestion 15 of 37Question 16 of 37 16. What material is used for shunt resistances? Manganin Eureka Nichrome CopperQuestion 16 of 37Question 17 of 37 17. Which force is required to move the pointer from zero position in an indicating instrument? Air friction damping Eddy current damping Deflecting force Controlling forceQuestion 17 of 37Question 18 of 37 18. Which meter measures motor revolutions per minute? Energy meter Center zero ammeter Tachometer Ampere hour meterQuestion 18 of 37Question 19 of 37 19. What is the unit of instrument sensitivity? Ohm/metre Ohm/volt Ohm metre Volt/ohmQuestion 19 of 37Question 20 of 37 20. Why are two straight holes provided in an energy meter's aluminum disc? Power factor correction Arrest creeping error Reduce disc weight Prevent flux leakageQuestion 20 of 37Question 21 of 37 21. Why do moving coil meters have uniform scales? Deflecting torque ∝ current² Deflecting torque ∝ current Deflecting torque ∝ 1/current Deflecting torque ∝ 1/current²Question 21 of 37Question 22 of 37 22. What is the function of an integrating instrument? Registers the quantity Indicates the quantity Displays the quantity Measures the quantityQuestion 22 of 37Question 23 of 37 23. What error occurs when an energy meter disc rotates continuously without load? Creeping error Friction error Speed error Phase errorQuestion 23 of 37Question 24 of 37 24. Which is an absolute instrument? Voltmeter Ammeter Energy meter Tangent galvanometerQuestion 24 of 37Question 25 of 37 25. Why is damping force required in moving coil instruments? Returns needle to zero position Makes needle movement faster Stops needle without oscillations Helps deflecting force act fastQuestion 25 of 37Question 26 of 37 26. Calculate the shunt resistance needed to measure 10mA with a 1mA meter: 300Ω 3Ω 30Ω 0.3ΩQuestion 26 of 37Question 27 of 37 27. What type of wattmeter is this? Three element 3-phase wattmeter Three phase two element with CT & PT Three element 4-wire wattmeter Two element 3-phase wattmeterQuestion 27 of 37Question 28 of 37 28. In which position should instruments with gravity control be used? Inclined position Vertical position Horizontal position Any positionQuestion 28 of 37Question 29 of 37 29. Which measuring error is caused by magnetic field effects? Device error Influence error Switching error Human errorQuestion 29 of 37Question 30 of 37 30. Which type of energy meter works with neutral connection? Single phase single element Three phase two element Three phase three element Three phase two element with CT & PTQuestion 30 of 37Question 31 of 37 31. How to identify a moving iron type instrument? No terminal marking One terminal colored red Terminals marked (+) and (-) Only (+) terminal markedQuestion 31 of 37Question 32 of 37 32. What type of meter is this? AC multirange ammeter AC and DC multirange voltmeter DC multirange voltmeter AC and DC multirange ammeterQuestion 32 of 37Question 33 of 37 33. Which material is used to make control springs in measuring instruments? Tinned copper Steel Silver Phosphor bronzeQuestion 33 of 37Question 34 of 37 34. Which parameter causes loading effect in measuring instruments? High sensitivity Low accuracy Low sensitivity Low influence errorQuestion 34 of 37Question 35 of 37 35. What is the purpose of the 3rd terminal in advanced megohm meters? Get accurate readings without oscillation Pass excess voltage to ground Get higher ohmic values Pass excess current to groundQuestion 35 of 37Question 36 of 37 36. In which position should spring-controlled instruments be used? Vertical position only Inclined position only Any position Horizontal position onlyQuestion 36 of 37Question 37 of 37 37. Which error occurs due to incorrect instrument positioning during reading? Human error Device error Switching error Influence errorQuestion 37 of 37 Loading...