Practice Test: Question Set - 46
1. LVDT used for displacement measurement is a/an __________ transducer.
- (A) Passive
- (B) Active
- (C) Capacitive
- (D) None of these
2. Which of the following is resistant to the action of both heat & chemicals?
- (A) Borosilicate glass
- (B) Silica glass
- (C) Soda lime glass
- (D) None of these
3. Cold chisel’s hammers are made of
- (A) High speed steel
- (B) High carbon steel
- (C) Forged steel
- (D) Mild steel
4. The kinematic viscosity (in stoke) and the absolute/dynamic viscosity (in poise) are the same for __________ at room temperature.
- (A) Air
- (B) Water
- (C) Mercury
- (D) Alcohol
5. Solidification time of a molten metal in a casting is proportional to (where, V = volume of metal & A = its surface area; in the casting)
- (A) V/A
- (B) V/A2
- (C) V2/A
- (D) V2/A2
6. __________ wire is never used for making the heating element.
- (A) Nichrome
- (B) Kanthal
- (C) Invar
- (D) None of these
7. Cassiterite is an ore of
- (A) Tin
- (B) Lead
- (C) Molybdenum
- (D) Chromium
8. The heat released by cooling one mole of copper from 400 K to room temperature (300 K) is (assume : Cp of copper is 23 J K-1mole-1)
- (A) 2300 J
- (B) 4600 J
- (C) 230 J
- (D) 2.3 × 106 J
9. Two solutions A1 & A2 have pH value of 2 & 6 respectively. It implies that the solution
- (A) A1 is more alkaline than solution A2
- (B) A1 is highly acidic
- (C) A2 is very slightly acidic
- (D) Both (b) & (c)
10. The most suitable material for die casting is
- (A) Iron
- (B) Copper
- (C) Steel
- (D) Nickel
11. __________ is the most important element, which controls the physical properties of steel.
- (A) Manganese
- (B) Silicon
- (C) Carbon
- (D) Vanadium
12. In a totally irreversible isothermal expansion process for an ideal gas, ΔE = 0, ΔH = 0. Then ΔQ and ΔS will be
- (A) ΔQ = 0, ΔS=0
- (B) ΔQ = 0, ΔS = +ve
- (C) ΔQ = 0, ΔS = -ve
- (D) ΔQ = +ve, ΔS= +ve
13. __________ is the hardest material out of the following.
- (A) Boron carbide
- (B) Tungsten carbide
- (C) Hardened steel
- (D) Silicon carbide
14. The taper provided on pattern for its easy & clean withdrawal from the mould is termed as the __________ allowance.
- (A) Casting
- (B) Pattern
- (C) Draft
- (D) Distortion
15. In the X-ray radiography technique, the tube voltage for thicker plates as compared to thin plates, should be
- (A) Higher, as it gives higher wavelength
- (B) Lower, as it gives higher wavelength
- (C) Higher, as it gives shorter wavelength
- (D) Lower, as it gives shorter wavelength
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