Workshop Calculations Semester 3 July 2017

Workshop Calculation & Science - Semester III (July 2017)

1. Velocity, Density and Acceleration are known as:
   a) Fundamental quantities
   b) Derived quantities ✔
   c) Similitude
   d) SI unit
2. A sheet 10 m × 5 m is cut into pieces of 25 cm × 20 cm. Number of pieces:
   a) 800 pieces
   b) 825 pieces
   c) 1000 pieces ✔
   d) 725 pieces
3. Sin (90 + θ) =
   a) Cos θ ✔
   b) Tan θ
   c) Sin θ
   d) Sec θ
4. The unit of work is:
   a) Joule ✔
   b) Watt
   c) Newton
   d) Pascal
5. 36 inches = ______ cm
   a) 80.5
   b) 91.44 ✔
   c) 101.88
   d) 90
6. 3.745 × 5.87 =
   a) 21.98 ✔
   b) 29.81
   c) 18.29
   d) 19.82
7. 44 − [33 − {44 − (33 − 44 − 33)}] =
   a) 1858
   b) 1947 ✔
   c) 2000
   d) 1900
8. What percentage of 40 is 10?
   a) 10
   b) 25 ✔
   c) 80
   d) 100
9. Poisson’s ratio is:
   a) 1/m ✔
   b) m
   c) k
   d) 1/k
10. Circumference of circle is:
    a) πR²
    b) 2R
    c) 2πR ✔
    d) πR²/2
11. In right triangle, hypotenuse AC =
    a) √(BC² + AC²)
    b) √(AB² + BA²)
    c) √(CB² + BC²)
    d) √(AB² + BC²) ✔
12. 5 m² = ______ cm²
    a) 50000
    b) 40000
    c) 5000
    d) 4000 ✔
13. 37°C = ______ °F
    a) 98.6 ✔
    b) 78
    c) 87
    d) 104
14. 10 kW = ______ HP
    a) 13.41 ✔
    b) 1.341
    c) 768
    d) 1000
15. 78000 kg/m³ = ______ kN/m³
    a) 780000
    b) 60000
    c) 7800 ✔
    d) 6000
16. Density = mass/volume → (42 g, 15 mL):
    a) 0.352 g/mL
    b) 2.80 g/mL ✔
    c) 630 g/mL
    d) None
17. Area of circle is:
    a) πR² ✔
    b) 2R
    c) 2πR
    d) πR²/2
18. 2 × π × (1/22) =
    a) 2/7 ✔
    b) 7/2
    c) 22/7
    d) 7/22
19. SI unit of distance:
    a) Centimeters
    b) Inches
    c) Meters ✔
    d) Kilometres
20. 1 gallon = ______ litres
    a) 3.785 ✔
    b) 3
    c) 4
    d) 5.5
21. 110°F = ______ °C
    a) 37
    b) 40
    c) 43.33 ✔
    d) 27
22. Work done lifting 15 N by 3 m:
    a) 45 joules ✔
    b) 20 joules
    c) 90 joules
    d) 22.5 joules
23. Area of triangle =
    a) (B × H)/2 ✔
    b) B × H
    c) 2BH
    d) B/H
24. Correct value of π:
    a) 22/7 ✔
    b) 7/22
    c) 3.4
    d) 3/4
25. Area of equilateral triangle (side 8 mm):
    a) 27.7 mm² ✔
    b) 27.7 cm²
    c) 2.7 cm²
    d) 88 mm²