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