/50 The DIYguru Entrance Test (DET) has begun! Remember to read each question carefully and choose the best answer. Good luck! You can do this! 🚗⚡ Time's Up! The quiz timer has ended. Thank you for participating in the DET Test. Your responses have been recorded. Click Submit to see your score. Great effort, and we hope you learned something new! ⚡🚗 The DIYguru Entrance Test (The DET Test) Welcome to the DIYguru Entrance Test (DET Test)! The DET Test consists of 50 multiple-choice questions (MCQs) designed to assess your knowledge in electrical & mechanical fields. This test will evaluate your eligibility for the DIYguru programs in EV technology, as well as your general technical aptitude. Please read the instructions carefully: - The DET test is of 50 marks total. Each question carries 1 mark. - You will have 25 minutes to complete the quiz, so read each question carefully. - Each question has four options, but only one correct answer. Please select the option that you believe is the most accurate. - The passing score for the DET test is set at 50%. Each correct answer will contribute to your overall score. Make sure to review your answers carefully before submitting the quiz. - At the end of the quiz, you will receive your score along with the number of correct responses (only first response will be counted). Note: Students who perform well in this eligibility exam will get the chance to book an exclusive one-on-one counseling session with an EV expert, based on their DET score. Best of luck! 🚗⚡ Please fill the details: NameEmailPhone NumberAre you a DIYguru/Internshala student?Are you a DIYguru/Internshala student?YesNoPlease select your highest qualification:Please select your highest qualification:M.Tech / M.S / Ph.DB.Tech / B.EB.Sc / DiplomaOthers (e.g., B.A, B.Com, etc.)What is your current status?What is your current status?Working professionalStudentOn a career breakHow did you find us?How did you find us?Google SearchFacebookInstagramFriendsNewspaperOrganisation 1 / 50 1. The frequency of domestic power supply in India is? A. 60 Hz B. 200 Hz C. 100 Hz D. 50 Hz 2 / 50 2. Transformer rating are usually expressed in terms of? A. kWh B. kVA C. kVAR D. kW 3 / 50 3. A step-up transformer increases? A. Frequency B. Voltage C. Current D. Power 4 / 50 4. Which of the following motors, on removal of load, will run at the highest speed? A. Series motor B. Cumulative compound C. Shunt motor D. Differential compound 5 / 50 5. Which of the following is the most likely source of harmonics in a transformer? A. Poor-insulation B. Core saturation C. Overload D. Loose connections 6 / 50 6. What is the primary function of a crankshaft in an engine? A. Absorb vibrations B. Stabilize pressure C. Transmit torque D. Provide lubrication 7 / 50 7. Which one of the following is not necessarily the advantage of D.C. motors over A.C. motors? A. High starting torque B. Wide speed range C. Low Cost D. Stability 8 / 50 8. In a series circuit with unequal resistances? A. The lowest resistance has the highest voltage drop B. The lowest resistance has the highest current C. The highest resistance has the most current D. The highest resistance has the highest voltage drop 9 / 50 9. In case of D.C. generators, the armature voltage control is considered as suitable if the machine is driven? A. At constant load B. At constant VA C. At constant torque D. At constant current 10 / 50 10. Which of the following components of a D.C. generator plays a vital role for providing direct current of a DC generator? A. Dummy coils B. Equalizer rings C. Commutator D. Eye bolt 11 / 50 11. In an electric kettle, water boils in 10 minutes. It is required to boil the water in 5 minutes, using the same supply mains? A. Length of heating element should be decreased B. None of the given factors C. Length of heating element should be increased D. Length of heating element has no effect on heating of water 12 / 50 12. Dielectric strength ...... with increasing thickness? A. None of the given options B. Decreases C. Increases D. Remains unaltered 13 / 50 13. The pressure exerted by a liquid column is proportional to? A. None of these B. Temperature C. Depth of the liquid D. Surface area 14 / 50 14. An oil filter bypass valve opens when the? A. Engine overheats B. Engine is cold C. Engine runs at high speed D. Oil filter becomes clogged 15 / 50 15. The noise produced by a transformer is termed as? A. Buzz B. Hum C. Ringing D. Zoom 16 / 50 16. For which of the following ampere second could be the unit? A. Power B. Reluctance C. Charge D. Energy 17 / 50 17. In a DC machine, fractional pitch winding is used? A. To reduce sparking B. To increase the generated voltage C. To reduce sparking & save the copper because of shorter end connections D. To save the copper because of shorter end connections 18 / 50 18. Two resistors are said to be connected in series when? A. Total current equals the sum of branch currents B. Sum of IR drops equals the applied e.m.f. C. Both carry the same value of current D. Same current passes in turn through both 19 / 50 19. In a hysteresis motor, the rotor? A. Should have all of the given features B. Has high retentivity C. Is made of chrome steel D. Has high hysteresis loss 20 / 50 20. During open circuit test of a transformer? A. Primary is supplied rated kVA B. Primary is supplied rated voltage C. Primary is supplied current at reduced voltage D. Primary is supplied full-load current 21 / 50 21. An instrument which detects electric current is known as? A. Rheostat B. Wattmeter C. Galvanometer D. Voltmeter 22 / 50 22. Three resistances of 10 ohms, 15 ohms, and 30 ohms are connected in parallel. The total resistance of the combination is? A. 15 ohms B. 10 ohms C. 5 ohms D. 65 ohms 23 / 50 23. In the D.C. motor, the iron losses occur in? A. The commutator B. The armature C. The field D. The brushes 24 / 50 24. What is the term for the distance between two consecutive crests of a wave? A. Frequency B. Wavelength C. Period D. Amplitude 25 / 50 25. What is the SI unit of force? A. Newton B. Pascal C. Watt D. Joule 26 / 50 26. A series motor is best suited for driving? A. Shear and punches B. None of the given options C. Machine tools D. Cranes and hoists 27 / 50 27. A closed switch has a resistance of? A. Infinity B. Zero C. About 500 ohms D. About 50 ohms 28 / 50 28. In D.C. generators on no-load, the air gap flux distribution in space is? A. Pulsating B. Triangular C. Sinusoidal D. Flat topped 29 / 50 29. 1 volt/metre is same as? A. 1 newton metre B. 1 joule/coulomb C. 1 newton/columb D. 1 metre/coulomb 30 / 50 30. Which law states that the extension of a spring is proportional to the force applied? A. Newton’s 3rd Law B. Hooke's Law C. Pascal's Law D. Boyle's Law 31 / 50 31. In mechanics, the rate of change of velocity is known as? A. Force B. Speed C. Work D. Acceleration 32 / 50 32. Power factor of magnetising component of current of a transformer is? A. 0.8 lag B. 0.8 lead C. Unity D. Zero 33 / 50 33. Form factor for a sine wave is? A. 1.414 B. 1.11 C. 0.637 D. 0.707 34 / 50 34. In mechanics, what is the term used to describe the resistance to motion between two objects in contact? A. Momentum B. Tension C. Friction D. Force 35 / 50 35. The instrument used to measure atmospheric pressure is? A. Ammeter B. Barometer C. Thermometer D. Hygrometer 36 / 50 36. What is the device called that converts mechanical energy into electrical energy? A. Motor B. Capacitor C. Transformer D. Generator 37 / 50 37. Which of the following D.C. generators will be in a position to build up without any residual magnetism in the poles? A. Series generator B. None of the given options C. Shunt generator D. Compound generator 38 / 50 38. A transformer can have regulation closer to zero? A. On leading power factor B. On overload C. On zero power factor D. On full-load 39 / 50 39. With rise in temperature the resistance of semi-conductors? A. Increases B. First increases and then decreases C. Remains constant D. Decreases 40 / 50 40. In a shunt generator, the voltage build up is generally restricted by? A. Insulation restrictions B. Armature heating C. Speed limitation D. Saturation of iron 41 / 50 41. For the same peak value, which of the following wave has the least mean value? A. Square wave B. Sine wave C. Triangular wave D. Half wave rectified sine wave 42 / 50 42. If the centrifugal switch does not open at 70 to 80 percent of synchronous speed of motor, it would result in? A. None of the given options. B. Damage to the starting winding C. Overloading of running winding D. Damage to the centrifugal switch 43 / 50 43. A transformer transforms? A. Voltage B. Power C. Current D. Current and voltage 44 / 50 44. Which of the following capacitors is marked for polarity? A. Electrolytic B. Paper C. Mica D. Air 45 / 50 45. In an electrical circuit, what is the function of a fuse? A. Decrease power B. Stabilize voltage C. Increase current D. Protect the circuit 46 / 50 46. What is the purpose of a flywheel in an engine? A. Increase friction B. Reduce weight C. Provide lubrication D. Store energy 47 / 50 47. Which of the following statements regarding single-phase induction motor is correct? A. It requires only one winding B. It is self-starting C. It is not self-starting D. It can rotate in one direction only 48 / 50 48. What is the formula for calculating electrical power in a circuit? A. Power = V × I B. Power = I × R C. Power = R × V D. Power = V / I 49 / 50 49. Ohm's law is not applicable to? A. Circuits with low current densities B. Vacuum tubes C. Carbon resistors D. High voltage circuits 50 / 50 50. What is the unit of pressure in the SI system? A. Joule B. Pascal C. Watt D. Newton Your score is 0%
The DIYguru Entrance Test (DET) has begun!
Remember to read each question carefully and choose the best answer. Good luck!
You can do this! 🚗⚡
Time's Up!
The quiz timer has ended. Thank you for participating in the DET Test. Your responses have been recorded.
Click Submit to see your score. Great effort, and we hope you learned something new! ⚡🚗
The DIYguru Entrance Test (The DET Test)
The DET Test consists of 50 multiple-choice questions (MCQs) designed to assess your knowledge in electrical & mechanical fields. This test will evaluate your eligibility for the DIYguru programs in EV technology, as well as your general technical aptitude.
Please read the instructions carefully:
- The DET test is of 50 marks total. Each question carries 1 mark.
- You will have 25 minutes to complete the quiz, so read each question carefully.
- Each question has four options, but only one correct answer. Please select the option that you believe is the most accurate.
- The passing score for the DET test is set at 50%. Each correct answer will contribute to your overall score. Make sure to review your answers carefully before submitting the quiz.
- At the end of the quiz, you will receive your score along with the number of correct responses (only first response will be counted).
Note: Students who perform well in this eligibility exam will get the chance to book an exclusive one-on-one counseling session with an EV expert, based on their DET score.
Best of luck! 🚗⚡
Please fill the details:
1 / 50
1. The frequency of domestic power supply in India is?
2 / 50
2. Transformer rating are usually expressed in terms of?
3 / 50
3. A step-up transformer increases?
4 / 50
4. Which of the following motors, on removal of load, will run at the highest speed?
5 / 50
5. Which of the following is the most likely source of harmonics in a transformer?
6 / 50
6. What is the primary function of a crankshaft in an engine?
7 / 50
7. Which one of the following is not necessarily the advantage of D.C. motors over A.C. motors?
8 / 50
8. In a series circuit with unequal resistances?
9 / 50
9. In case of D.C. generators, the armature voltage control is considered as suitable if the machine is driven?
10 / 50
10. Which of the following components of a D.C. generator plays a vital role for providing direct current of a DC generator?
11 / 50
11. In an electric kettle, water boils in 10 minutes. It is required to boil the water in 5 minutes, using the same supply mains?
12 / 50
12. Dielectric strength ...... with increasing thickness?
13 / 50
13. The pressure exerted by a liquid column is proportional to?
14 / 50
14. An oil filter bypass valve opens when the?
15 / 50
15. The noise produced by a transformer is termed as?
16 / 50
16. For which of the following ampere second could be the unit?
17 / 50
17. In a DC machine, fractional pitch winding is used?
18 / 50
18. Two resistors are said to be connected in series when?
19 / 50
19. In a hysteresis motor, the rotor?
20 / 50
20. During open circuit test of a transformer?
21 / 50
21. An instrument which detects electric current is known as?
22 / 50
22. Three resistances of 10 ohms, 15 ohms, and 30 ohms are connected in parallel. The total resistance of the combination is?
23 / 50
23. In the D.C. motor, the iron losses occur in?
24 / 50
24. What is the term for the distance between two consecutive crests of a wave?
25 / 50
25. What is the SI unit of force?
26 / 50
26. A series motor is best suited for driving?
27 / 50
27. A closed switch has a resistance of?
28 / 50
28. In D.C. generators on no-load, the air gap flux distribution in space is?
29 / 50
29. 1 volt/metre is same as?
30 / 50
30. Which law states that the extension of a spring is proportional to the force applied?
31 / 50
31. In mechanics, the rate of change of velocity is known as?
32 / 50
32. Power factor of magnetising component of current of a transformer is?
33 / 50
33. Form factor for a sine wave is?
34 / 50
34. In mechanics, what is the term used to describe the resistance to motion between two objects in contact?
35 / 50
35. The instrument used to measure atmospheric pressure is?
36 / 50
36. What is the device called that converts mechanical energy into electrical energy?
37 / 50
37. Which of the following D.C. generators will be in a position to build up without any residual magnetism in the poles?
38 / 50
38. A transformer can have regulation closer to zero?
39 / 50
39. With rise in temperature the resistance of semi-conductors?
40 / 50
40. In a shunt generator, the voltage build up is generally restricted by?
41 / 50
41. For the same peak value, which of the following wave has the least mean value?
42 / 50
42. If the centrifugal switch does not open at 70 to 80 percent of synchronous speed of motor, it would result in?
43 / 50
43. A transformer transforms?
44 / 50
44. Which of the following capacitors is marked for polarity?
45 / 50
45. In an electrical circuit, what is the function of a fuse?
46 / 50
46. What is the purpose of a flywheel in an engine?
47 / 50
47. Which of the following statements regarding single-phase induction motor is correct?
48 / 50
48. What is the formula for calculating electrical power in a circuit?
49 / 50
49. Ohm's law is not applicable to?
50 / 50
50. What is the unit of pressure in the SI system?
Your score is
