All India Trade Test – 2024 Wireman – First Year – Set 3

All India Trade Test – 2024

Wireman – First Year – Set 3

Total Questions: 75

Maximum Marks: 150

Marks per Question: 2

Negative Marking: No

Part 1: Trade Theory (Questions 1–38)

Q1. What is the SI unit of specific resistance (resistivity)?

1. Ohm/cm
2. Ohm/m²
3. Ohm-metre
4. Micro-ohm/cm²

Q2. What happens to the resistance of a conductor if its diameter is doubled?

1. It doubles
2. It becomes four times
3. It becomes half
4. It becomes one-fourth

Q3. Which of the following quantities is directly proportional to resistance?

1. Cross-sectional area
2. Length
3. Resistivity
4. Temperature

Q4. If R1, R2 and R3 are connected in series, what is the formula for total resistance (RT)?

1. RT = R1 + R2 + R3
2. 1/RT = 1/R1 + 1/R2 + 1/R3
3. RT = R1 × R2 × R3
4. RT = R1 − R2 − R3

Q5. Which formula is used to calculate electrical power (P)?

1. P = I²R
2. P = R/V
3. P = IR
4. P = I/V

Q6. Which law is used to determine the equivalent resistance and current in a network?

1. Ohm's law
2. Kirchhoff's laws
3. Law of resistance
4. Lenz's law

Q7. Which of the following is a diamagnetic material?

1. Iron and nickel
2. Aluminium
3. Graphite
4. Copper

Q8. What is the unit of permeability?

1. Weber/metre
2. No unit
3. Ampere-turn/weber
4. Ampere-turn/metre²

Q9. Which property of a magnet is shown in the figure?

1. Induction property
2. Saturation property
3. Directional property
4. Existence of poles

Figure reference: See page 3 of the original PDF.

Q10. Which law is used to determine the direction of self-induced EMF in a coil?

1. Clock rule
2. Lenz's law
3. Ampere's law
4. Corkscrew rule

Q11. Which rule is used to determine the direction of magnetic lines around a current-carrying conductor?

1. Lenz's law
2. Right-hand grip rule
3. Fleming's left-hand rule
4. Fleming's right-hand rule

Q12. Which rule is used to determine the magnetic polarity of a solenoid?

1. Lenz's law
2. Right-hand palm rule
3. Fleming's left-hand rule
4. Fleming's right-hand rule

Q13. What is the purpose of the corkscrew rule?

1. To determine the direction of induced EMF
2. To determine the direction of rotation of a conductor
3. To determine the direction of current flowing through a conductor
4. To determine the direction of magnetic lines around a conductor

Q14. Which formula is used to calculate capacitance?

1. C = QV
2. C = Q + V
3. C = Q − V
4. C = Q/V

Q15. If three capacitors C1, C2 and C3 are connected in series, what is the formula for their total capacitance?

1. C = C1 + C2 + C3
2. C = 1/(C1 + C2 + C3)
3. 1/C = 1/C1 + 1/C2 + 1/C3
4. C = C1 × C2 × C3

Q16. Which of the following factors is inversely proportional to capacitance?

1. Dielectric strength
2. Plate thickness
3. Plate area
4. Distance between the plates

Q17. Which of the following materials has a higher dielectric constant?

1. Air
2. Paper
3. Ceramic
4. Polyester

Q18. Which material has a negative temperature coefficient?

1. Carbon
2. Tungsten
3. Nichrome
4. Manganin

Q19. What is the metallic composition of Permalloy?

1. Iron and nickel
2. Iron and copper
3. Iron and aluminium
4. Iron and chromium

Q20. Which type of capacitor is called a polarised capacitor?

1. Mica capacitor
2. Paper capacitor
3. Ceramic capacitor
4. Electrolytic capacitor

Q21. If three resistors R1, R2 and R3 are connected in parallel, what is the formula for equivalent resistance (RT)?

1. RT = R1 + R2 + R3
2. 1/RT = 1/R1 + 1/R2 + 1/R3
3. 1/RT = R1 + R2 + R3
4. RT = 1/R1 + R2 + R3

Q22. What is a Wheatstone bridge used for?

1. Measuring current
2. Measuring voltage
3. Calculating power
4. Determining an unknown resistance

Q23. What is the unit of reluctance?

1. Ampere-turn
2. Ampere-turn/weber
3. Weber
4. Ampere

Q24. What is the galvanometer reading in a balanced Wheatstone bridge?

1. Large deflection
2. Small deflection
3. Zero deflection
4. Oscillation

Q25. According to Ohm's law, which electrical quantity is inversely proportional to current when the voltage is constant?

1. Resistance
2. Voltage
3. Power
4. Energy

Q26. Which equation is correct according to Kirchhoff's first law? Select the answer based on the currents shown in the figure.

1. I1 + I3 = I2 + I4 + I5
2. I1 + I2 + I3 = I4 + I5
3. I1 + I2 = I3 + I4 + I5
4. I1 + I2 = I3 + I4 + I5 = 0

Figure reference: See the circuit on pages 7–8 of the original PDF.

Q27. Which factor depends on the permeability of a material?

1. Length
2. Flux density
3. Field intensity
4. Magnetomotive force

Q28. Which law is used to determine the EMF induced in a conductor?

1. Fleming's left-hand rule
2. Fleming's right-hand rule
3. Lenz's law
4. Faraday's law of electromagnetic induction

Q29. If no current flows through the galvanometer of a Wheatstone bridge, what is the condition of the circuit?

1. Balanced
2. Unbalanced
3. Short-circuited
4. Open-circuited

Q30. What happens to the total resistance when an additional resistor is connected in a parallel circuit?

1. It decreases
2. It remains the same
3. It doubles
4. It increases by 1.5 times

Q31. What precaution should be taken before connecting capacitors with different voltage ratings in series?

1. The total capacitance must be less than the capacitance of the smallest capacitor
2. The breakdown voltage of every capacitor must be the same
3. The voltage drop across each capacitor must remain below its rated voltage limit
4. All capacitors must be from the same manufacturer

Q32. What does the shape of the B-H curve of a material indicate?

1. The pulling force of the magnetic material
2. The magnetic properties of the material
3. The field intensity of the material
4. The reluctance of the material

Q33. Which method of magnetisation is used to make permanent magnets for commercial use?

1. Single-touch method
2. Double-touch method
3. Divided-touch method
4. Induction method

Q34. Which resistor has a negative temperature coefficient?

1. Thermistor
2. Sensistor
3. Varistor
4. LDR

Q35. Resistors of 50Ω, 220Ω, 450Ω and 560Ω are connected in parallel. Which resistor carries the least current?

1. 560Ω
2. 450Ω
3. 50Ω
4. 220Ω

Q36. Which electrical quantity affects the heat produced in a conductor?

1. Square of the current
2. Voltage
3. Current flowing
4. Square of the resistance

Q37. What is the value of the form factor?

1. 1.23
2. 1.11
3. 0.81
4. 0.707

Q38. What is the RMS value of an alternating voltage (AC voltage)?

1. 0.637 × Vav
2. 0.707 × Vav
3. 0.637 × Vmax
4. 0.707 × Vmax

Part 2: Workshop Calculation and Science (Questions 39–44)

Q39. What is the SI unit of heat?

1. Calorie
2. Joule
3. Centigrade heat unit
4. British thermal unit

Q40. What is the boiling point of water?

1. 0°C
2. 32°C
3. 100°C
4. 212°C

Q41. What is the unit of electric current?

1. Ampere
2. Volt
3. Ohm
4. Watt

Q42. What is the unit of resistance?

1. Ampere
2. Volt
3. Ohm
4. Watt

Q43. What is the flow of electrons through a conductor called?

1. Voltage
2. Current
3. Resistance
4. Power

Q44. Which of the following is a very good electrical conductor?

1. Copper
2. Cast iron
3. Wrought iron
4. Steel

Part 3: Engineering Drawing (Questions 45–50)

Q45. Identify the tool shown in the figure.

1. Try square
2. Surface gauge
3. Steel rule
4. Feeler gauge

Figure reference: See page 12 of the original PDF.

Q46. Identify the tool shown in the figure.

1. Ball-peen hammer
2. Cross-peen hammer
3. Straight-peen hammer
4. Sledgehammer

Figure reference: See page 13 of the original PDF.

Q47. Identify the tool shown in the figure.

1. Hawk-bill shears
2. Aviation shears
3. Cutting pliers
4. Double-cutting shears

Figure reference: See page 13 of the original PDF.

Q48. Identify the tool shown in the figure.

1. Ball-peen hammer
2. Mallet (wooden hammer)
3. Cross-peen hammer
4. Straight-peen hammer

Figure reference: See page 13 of the original PDF.

Q49. Identify the tool shown in the figure.

1. Open-end spanner
2. Ring spanner
3. Combination spanner
4. Adjustable spanner

Figure reference: See page 14 of the original PDF.

Q50. According to the standard, which dimension is correctly marked on the circle?

1. Figure A
2. Figure B
3. Figure C
4. Figure D

Figure reference: Compare all four figures on pages 14–15 of the original PDF.

Part 4: Employability Skills (Questions 51–75)

Q51. Which of the following is an example of good office etiquette?

1. Wearing formal clothes
2. Not being punctual at work
3. Keeping a loud and flashy ringtone on your mobile phone
4. Littering in the workplace

Q52. What is a word that has the same pronunciation as another word but a different meaning called?

1. Homophone
2. Homograph
3. Diphthong
4. Syllable

Q53. ______ can help me learn English.

1. Dedication
2. Fear
3. Anger
4. Shyness

Q54. Which punctuation mark should be used in the following sentence? “Is there any site engineer here”

1. ? (Question mark)
2. , (Comma)
3. . (Full stop)
4. ! (Exclamation mark)

Q55. When are capital letters used?

1. At the beginning of a sentence
2. In people's names
3. In place names
4. All of the above

Q56. Which of the following is a describing word?

1. Eat
2. Repair
3. Hot
4. Soup

Q57. What should you say in response when someone says “Thank you”?

1. Thank you
2. You're welcome
3. Bye-bye
4. How are you?

Q58. Choose the odd word.

1. Please
2. Sorry
3. Paper
4. Thanks

Q59. I am a welder. I work with ______.

1. Nail polish
2. Robots
3. Welding equipment
4. Laptops

Q60. Today's weather is going to be ______.

1. Hopeful
2. Hot
3. Blue
4. Very important

Q61. What does the word “When” refer to?

1. Place
2. Thing
3. Person
4. Time

Q62. Rahul enjoys ______ with his pet dog.

1. Playing
2. Writing
3. Working
4. Washing

Q63. What is it called when you clearly understand your personality, strengths, weaknesses, thoughts, beliefs, motivation and values?

1. Belief
2. Self-awareness
3. Myth
4. Threat

Q64. What are the abilities and qualities that help a person progress in life and career called?

1. Personal strengths
2. Personal weaknesses
3. Opportunities
4. Threats

Q65. What are qualities considered negative and needing improvement called?

1. Personal strengths
2. Personal weaknesses
3. Opportunities
4. Threats

Q66. Which of the following is an example of a personal weakness?

1. Self-confidence
2. Laziness
3. Being hardworking
4. Being active

Q67. There are two types of goals: ______.

1. Good and bad goals
2. Long-term and short-term goals
3. Rich and poor goals
4. Fixed-duration and indefinite-duration goals

Q68. What is stress?

1. A feeling of enjoyment
2. A feeling of surprise
3. A feeling of happiness
4. A feeling of disappointment or frustration

Q69. Which of the following is an indication of good stress?

1. It prevents you from pursuing your goals
2. It forces you to doubt yourself
3. It does not cause prolonged stress or lack of sleep
4. It makes you physically ill or causes pain

Q70. An activity that reduces stress is called a stress buster. Which of the following is NOT a stress buster?

1. Thinking about a problem for a long time
2. Going to bed on time
3. Listening to music
4. Gardening

Q71. What is mindfulness?

1. A technique for not paying attention to anything
2. A technique for making the brain faster
3. The ability to be fully present in the current moment
4. A description of people who think too much

Q72. Which statement about stress is correct?

1. Stress can be managed
2. Stress cannot be controlled
3. Stress cannot be reduced
4. All of the above

Q73. Which of the following statements is correct?

1. Only experts can solve any problem
2. The more problems you solve, the better your problem-solving skills become
3. It is necessary to take a course even to solve a simple problem
4. Solving a problem is not important

Q74. Which of the following should be considered when making a decision?

1. Your mood
2. Your friends' preferences
3. The rules of your community
4. Your personal preferences

Q75. What is the full form of SWOT?

1. Special Wellness Organization Theme
2. Speak Work Openly Together
3. Strong World Olympic Team
4. Strength, Weakness, Opportunity, Threat

Answer Key

Source: Wireman – First Year – Set 3, All India Trade Test 2024. The original questions and options appear on pages 1–21, and the answer key appears on page 22. Refer to the specified original PDF pages for image-based questions.

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