Units & Measurements Science GK - ObjectiveBooks

# G.K. Practice Test: Question Set - 05

1. 1 Inch = ______ Centimeter
(A) 3
(B) 2.54
(C) 2.7
(D) 2.67

2. Lux is the SI unit of
(A) Intensity of illumination
(B) Luminous efficiency
(C) Luminous flux
(D) Luminous intensity

3. Moment of inertia is
(A) Vector
(B) Scalar
(C) Phasor
(D) Tensor

4. One thousand microns is equal to
(A) 10-3 m
(B) 10-6 m
(C) 10-9 m
(D) 10-12 m

5. 1 Kilogram = _____ Pound
(A) 2
(B) 2.5
(C) 2.2
(D) 3.5

6. Pa (Pascal) is the unit for
(A) Thrust
(B) Pressure
(C) Frequency
(D) Conductivity

7. One watt-hour is equivalent to
(A) 6.3 × 103 J
(B) 6.3 × 10-7 J
(C) 3.6 × 103 J
(D) 3.6 × 10-3 J

8. A transformer is used to
(A) Increase DC voltage
(B) Increase or decrease AC voltage
(C) Decrease DC voltage
(D) Convert DC into AC

9. Device used to rectify farsightedness is
(A) Concave lens
(B) Convex lens
(C) Spherical lens
(D) Plane glass

10. At what temperature do both the Centigrade and the Fahrenheit thermometers show the same reading?
(A) -20°
(B) -40°
(C) 42°
(D) 0°

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