Practice Test: Question Set - 25
1. Cemented carbide tools are not suitable for cutting
- (A) Aluminium
- (B) Brass
- (C) Cast iron
- (D) Steel
2. __________ is the hardest oxide and is hence used where high wear resistance at high temperature is required.
- (A) Beryllium
- (B) Zirconia
- (C) Alumina
- (D) Magnesia
3. Milk is fat dispersed in water. It is an example of
- (A) Suspension
- (B) Emulsion
- (C) Gel
- (D) Solution
4. Case hardening of a material is
- (A) Followed by tempering or carburizing
- (B) Preceded by its tempering
- (C) Done to get a soft ductile interior with a very hard surface
- (D) Carried out to get extreme hardness in its core
5. Cobalt - 60 is used as a source of __________ in medical therapy & industrial radiography.
- (A) X-rays
- (B) γ-rays
- (C) α-rays
- (D) β-rays
6. According to thermodynamic Fahrenheit scale, the fundamental interval between ice point to steam point is
- (A) 180°
- (B) 212°
- (C) 32°
- (D) 273°
7. __________ is used for tying the steel columns to concrete foundation.
- (A) Grouting
- (B) Eyebolt
- (C) Anchor bolts
- (D) Refractory castables
8. Energy of the sun arises mainly from __________ reactions.
- (A) Fusion
- (B) Fission
- (C) Combustion
- (D) None of these
9. Alloys having more than 80% copper are generally more
- (A) Abrasion resistant
- (B) Corrosion resistant
- (C) Prone to season cracking
- (D) Machinable
10. The phenomenon occurring during explosion of a hydrogen bomb is
- (A) Nuclear fission
- (B) Nuclear fusion
- (C) A combination of both nuclear fission & fusion
- (D) None of these
11. Friction factor for fluid flow in pipe does not depend upon the
- (A) Pipe length
- (B) Pipe roughness
- (C) Fluid density & viscosity
- (D) Mass flow rate of fluid
12. Which of the following has the highest value of refractive index?
- (A) Brine (sea water)
- (B) Diamond
- (C) Distilled water
- (D) Glass
13. Which of the following is preferred for riveting?
- (A) Lap joint
- (B) Butt joint
- (C) Either (a) or (b)
- (D) Neither (a) nor (b)
14. Resistance of an electrical conductor is proportional to its (where, l = length and A = cross-sectional area of the conductor)
- (A) A
- (B) l
- (C) A2
- (D) Both 'a' & 'b'
15. In case of simple harmonic motion, displacement is proportional to the
- (A) Velocity
- (B) Acceleration
- (C) Both (a) & (b)
- (D) Neither (a) nor (b)
Next Tests: