2 Jul 2025 ELECTRICIAN 2nd YEAR MODULE – Control Panel Wiring ONLINE TEST by admin | posted in: nimi online test, nimionilne, NSQF, NSQF LEVEL 4, online test AITT | 0 TRANSLATE THIS QUIZ IN YOUR LANGUAGE इस प्रश्नोत्तरी का अपनी भाषा में अनुवाद करें <<12345678910111213141516171819202122232425262728293031323334353637>> 0% Question 1 of 37 1. How to protect the cable from insects and rats into the panel? By using sleeve By using Grommets By providing nylon cable ties By using cable binding strapsQuestion 1 of 37Question 2 of 37 2. Why is sequential control of motors required in industrial applications? To minimize the operating cost To share more loads To increase the accuracy of operation To reduce power consumptionQuestion 2 of 37Question 3 of 37 3. What is the purpose of control transformer used in control panel wiring? To supply the power to the auxiliary circuits To control the supply voltage to the contactor To maintain constant terminal voltage To protect the control elements from over voltage faultQuestion 3 of 37Question 4 of 37 4. Which is the correct sequence operation of contactors for operating automatic star-delta starter? Main→Timer→Delta→Star Star→Main→Timer→Delta Star→Timer→Main→Delta Main→Star→Delta→TimerQuestion 4 of 37Question 5 of 37 5. What is the name of the wiring accessory used in control panel wiring? Race ways DIN rails Grommets G channelQuestion 5 of 37Question 6 of 37 6. What is the criteria to select the contactor? Place of use the contactor Type of supply Type of load connected Supply voltage and loadQuestion 6 of 37Question 7 of 37 7. What is the use of 'G' channels in control panel? For fixing terminal connectors For fixing instruments For fixing relays For fixing contactorsQuestion 7 of 37Question 8 of 37 8. Which device controls the operations in sequential control systems? Relays Contactor Timer Control transformerQuestion 8 of 37Question 9 of 37 9. Why are control panels provided with control transformer? To supply reduced voltage to power circuit To maintain rated main supply voltage To maintain rated voltage to load To operate the auxiliary circuitsQuestion 9 of 37Question 10 of 37 10. Which accessory is used to mount MCB, OLR in the panel board without using screws? DIN Rail PVC channel G. channel GrommetsQuestion 10 of 37Question 11 of 37 11. Which device is avoided in the panel board assembly? Sensors Push button switch Indicating lamp Isolating switchQuestion 11 of 37Question 12 of 37 12. Why power and control wirings run in separate race ways? To increase the insulation resistance To increase the current carrying capacity To reduce the radio interference To reduce heatQuestion 12 of 37Question 13 of 37 13. How should control circuit voltage and power in a contactor be selected? As per rated current As per the type of supply As per no volt coil rating As per supply voltageQuestion 13 of 37Question 14 of 37 14. Which DC load is represented by the DC4 standard duty cycle of contactors? Resistive loads except motor loads Starting and stopping of series motor Starting and stopping of shunt motor Starting and stopping with inching and brakingQuestion 14 of 37Question 15 of 37 15. Which supply is indicated by the color of conductor exhibited on Red, Blue and Black? Supply AC system 3 phase Supply DC 3 wire system Single phase AC system Apparatus AC system 3 phaseQuestion 15 of 37Question 16 of 37 16. What is the name of the device marked as 'X'? Stop button Main contact Auxiliary contact Start buttonQuestion 16 of 37Question 17 of 37 17. How are the contacts in a contactor engaged for working? By mechanical settings By manual operation By using bimetallic strip to change the position By operating electromagnet to change the positionQuestion 17 of 37Question 18 of 37 18. What is the function of limit switch in control panel wiring? Controls machine from over heat Controls machine from over speed Controls machine from over loading Controls distance movement of any machineQuestion 18 of 37Question 19 of 37 19. Why the motor is not changing the direction, if reverse push button is pressed in forward and reverse control star delta starter? No volt coil is not energized No voltage exist in reverse contactor Fault in forward contactor Due to interlock in reverse contactorQuestion 19 of 37Question 20 of 37 20. Which is the standard duty cycle code of the contactor for starting and stopping the AC resistive and inductive load?AC1AC 3AC4AC2Question 20 of 37Question 21 of 37 21. What is the name of the accessory used in control panel wiring? Lugs Terminal connector Grommet ThimbleQuestion 21 of 37Question 22 of 37 22. Which switch with an actuator is operated by the motion of a machine or part of an object? Push button switch Limit switch Isolating switch Toggle switchQuestion 22 of 37Question 23 of 37 23. Which type of device protects motors from over heating and over loading in a panel board? Limit switch Electro mechanical relay Thermal relay RectifierQuestion 23 of 37Question 24 of 37 24. Which device protects from overload and short circuit in a panel board? Isolating switch Miniature circuit breaker Thermal overload relay Time delay relayQuestion 24 of 37Question 25 of 37 25. What is the purpose of DIN-rail used in control panel wiring? It provides a pathway for electrical wiring Mounting the double deck terminal connectors Mounting the control accessories without screws Install the high powered circuit accessoriesQuestion 25 of 37Question 26 of 37 26. What is the name of the device marked as 'X' in the circuit? Over load relay trip Stop button No volt coil ContactorQuestion 26 of 37Question 27 of 37 27. What is the name of the accessory used in control panel wiring? Wire ferrules Wire sleeves Cable binding strap Nylon cable tiesQuestion 27 of 37Question 28 of 37 28. What essential feature to be considered while designing a layout of control panel? Suitable method of labelling and cable harnessing Proper type of protection and measuring system Outside dimensions and swing area of cabinet door Inside area and number of indicating lights in front panelQuestion 28 of 37Question 29 of 37 29. What is the use of PVC channel in a control panel wiring? Pathway for electrical wiring and protection Mounting MCB Mounting relays Mounting double deck terminal contactorQuestion 29 of 37Question 30 of 37 30. Which cable ties are used to bunch the wires? Silk ties Cotton ties Nylon ties P.V.C tiesQuestion 30 of 37Question 31 of 37 31. Which circuit uses limit switches? Lift circuits Street lighting Domestic power circuits Motor control circuitsQuestion 31 of 37Question 32 of 37 32. What is the purpose of thermal overload relay in control panel? Switching ON/OFF the circuit Protect the motor from over heating and loading Protect the circuit from earth fault Control the circuit based on time delayQuestion 32 of 37Question 33 of 37 33. Which device prevents flare out of stripped and stranded cables in the panel board? Lugs and thimbles Sleeves Wire ferrules Cable binding straps and buttonQuestion 33 of 37Question 34 of 37 34. What happens if time delay relay of an auto star-delta starter remains in closed condition after starting? Runs in delta only Runs in star only Starts and stop Runs normallyQuestion 34 of 37Question 35 of 37 35. What is the reason for providing two separate Earthings in panel board? Control the stray field in the panel Reduce the voltage drop in panel board Panel board is made in metal box Ensure one earthing in case of other failureQuestion 35 of 37Question 36 of 37 36. Which switch is operated at OFF load condition? Limit switch Two way switch Isolating switch Push button switchQuestion 36 of 37Question 37 of 37 37. Which material is used to make open frame bimetallic adjustable thermostat contacts? Silver Bronze Copper BrassQuestion 37 of 37 Loading...
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