1. WORKSHOP CALCULATION & SCIENCE
1. What are the two classifica ons of system of units?
(A) Bri sh and Metric (B) Gravita onal and non-gravita onal (C) Fundamental and
derived (D) Metric and Interna onal
2. How many millimeters are there in 1 inch?
(A) 2.54 mm (B) 25.4 mm (C) 24.5 mm (D) 2.45 mm
3. What is the LCM of 18, 42, 24?
(A) 2 (B) 6 (C) 18 (D) 24
4. What is the improper frac on for the given mixed frac on? 7
(A) 52/7 (B) 7/52 (C) 28/7 (D) 7/28
5. What is the length of each part is a copper wire of 225 metre long is cut into 900 equal
parts?
(A) 0.23 metre (B) 0.25 metre (C) 0.28 metre (D) 0.29 metre
6. What is the square root of 529?
A: 13 B : 23 C : 33 D : 43
7. What is the ra o of 4 kg to 800 grams?
A : 5 : 1 B : 4 : 8 C : 8 : 4 D : 2 : 4
8. How much is 8% of 40 kg?
A : 2.2 kg B : 3.2 kg C : 4.2 kg D : 5.2 kg
9. Convert 52% into frac on?
A : 9/ 25 B : 11 /25 C : 13/ 25 D : 17 /25
10. Convert 0.456 decimal frac on into percentage?
A : 45.6% B : 0.0456 C : 0.456% D : 0.0456%
11. What is the decimal frac on of conversion of 18.5%?
A : 0.185 B : 0.175 C : 0.165 D : 0.195
12. What is the percentage of copper if the cas ng weight of copper 42.3 kg and n weight
2.7 kg?
A : Cu 92% B : Cu 94% C : Cu 96% D : Cu 98%
13. What is the length L2, if total length (L) is 2.75 metre and L1 : L2 = 2 : 3?
A : 1.1 metre B : 1.25 metre C : 1.65 metre D : 1.75 metre
14. Which one is non-metal?
(A) Mercury (B) Graphite (C) Brass (D) Iron
15. What is the name of the metal which do not contain iron?
(A) Ferrous metals (B) Non-ferrous metals (C) Insula ng metals (D) Non-Insula ng metals
16. Which one of the following proper es is the mechanical proper es of metal?
(A) Fusibility (B) Duc lity (C) Corrosion (D) Structure
2. 17. Which alloy used in electric lamp as filament?
(A) Cobalt (B) Vanadium (C) Tungsten (D) Silicon
18. Which metal is widely used for making cas ng of machinery parts?
(A) Grey cast iron (B) White cast iron (C) Malleable cast iron (D) Wrought iron
19. What is the name of the property of an insula on that should break down or puncture
on applica on of high voltage
(A) Di-electric strength (B) Specific resistance (C) Mechanical strength (D) Non
absorp on
20. Which steel is used for making files and cold chisel?
(A) Low carbon steel (B) Medium carbon steel (C) High carbon steel
21. What is termed as the quan ty of ma er contained in a body?
(A) Density (B) Volume (C) Mass (D) Specific gravity
22. What is called mass per unit volume of a substances?
(A) Mass (B) Weight (C) Density (D) Volume
23. What is called the ra o between the density of a substance's density of water at 4°C?
(A) Density (B) Specific gravity (C) Mass (D) Weight
24. What is the mass if the density of a body is 7.6 g/cm³ and its volume is 25 cm³?
(A) 190 grams (B) 200 grams (C) 210 grams (D) 220 grams
25. What is the weight force of a car having a mass of 800 kg?
(A) 7848 Newton (B) 7748 Newton (C) 7847 Newton (D) 7487 Newton
26. What is the specific gravity of the metal, if the weighs 6.5 kgf in air and 3.5 kgf in water?
(A) 6.166 (B) 3.166 (C) 2.166 (D) 1.166
27. What is the specific gravity of the metal, if the piece of metal weighs 150 grams in air
and 125 grams in water?
(A) 6 (B) 10 (C) 15 (D) 25
28. What is the volume of mercury in cm³, if the mass (m) of mercury is 136 grams (g) and
density (r) of mercury is 13.6 g/cm³?
(A) 136 cm³ (B) 13.6 cm³ (C) 10.6 cm³ (D) 10.0 cm³
29. What is the unit of speed?
(A) Meter/second (B) Meter/second² (C) Meter/minute (D) Meter/hour
30. What is the formula for velocity?
(A) Distance covered/Time (B) Displacement/Time (C) Change in velocity/Time (D)
Change of momentum/Time
31. What is called if a body possess both magnitude and direc on of velocity?
(A) Speed (B) Velocity (C) Vector quan ty (D) Scalar quan ty
32. What is the unit of accelera on of an object?
(A) Meter/second (B) Meter/second² (C) Metre/minutes (D) Metre/minutes²
33. What is the accelera on of a car if the speed of the car has increased from 25 km per
hour to 40 km per hour in one minute?
(A) 0.059 m/sec² (B) 0.59 m/sec² (C) 0.069 m/sec² (D) 0.69 m/sec²
3. 34. What is the retarda on of a car moving with a velocity of 50 km/hr is brought to rest in
45 seconds?
(A) 0.40 m/sec² (B) 0.30 m/sec² (C) 0.20 m/sec² (D) 0.10 m/sec²
35. What is called if a force of 1 Newton acts on a body and moves it through a distance of 1
metre?
(A) 1 Joule (B) 10 Joules (C) 1 dyne (D) 10 dynes
36. How many ergs for 1 Joule?
(A) 10² ergs (B) 10⁴ ergs (C) 10⁷ ergs (D) 10³ ergs
37. What is the S.I unit of heat?
(A) Calorie (B) Joule (C) Cen grade heat unit (D) Bri sh thermal unit
38. Which instrument is used to measure heat?
(A) Calorie meter (B) Thermometer (C) Pyrometer (D) Barometer
39. What is the quan ty of heat required to raise the temperature of 1 gram of water
through 1°C is called?
(A) Specific heat (B) Calorie (C) Bri sh thermal unit (D) Cen grade heat unit
40. What is the boiling point of water in Fahrenheit scale?
(A) 212°F (B) 180°F (C) 112°F (D) 100°F
41. What is the freezing point of water in kelvin scale (K)?
(A) 373°K (B) 313°K (C) 303°K (D) 273°K
42. Convert 45°C (Cen grade) into °F (Fahrenheit)
(A) 110°F (B) 111°F (C) 112°F (D) 113°F
43. What is the maximum temperature that can be measured by mercury thermometer?
(A) 400°C (B) 300°C (C) 200°C (D) 100°C
44. What is called if the length of the solid expands when heated?
(A) Linear expansion (B) Superficial expansion (C) Cubical expansion
45. What is the change in length per unit original length per degree rise in temperature is
called?
(A) Co-efficient of fric on (B) Co-efficient of linear expansion (C) Co-efficient of
superficial expansion (D) Co-efficient of cubical expansion
46. What is the flow of electrons in any conductor?
(A) Voltage (B) Current (C) Resistance (D) Power
47. What is the total resistance if three resistances of 3 ohms, 9 ohms and 5 ohms are
connected in series?
(A) 11 ohms (B) 7ohm (C) 17 ohms (D) 1/17 ohms
48. What is the total resistance if two resistances of 4 ohms and 6 ohms are connected in
parallel?
(A) 5 Ohm (B) 2.5 Ohm (C) 2.4 Ohm (D) 10 Ohm
49. Which law states that at constant temperature the current passing through a closed
circuit is directly propor onal to the poten al difference and inversely propor onal to
the resistance?
(A) Ohm's law (B) Lenz's law (C) Newton's law (D) Hooke's law
4. 50. Which statement is correct according to Ohm's law?
(A) I ∝ 1/V (B) I ∝ R (C) I ∝ V/R (D) I ∝ R/V
51.
52.
