If the sand is too fine, its permeability will be high. True False

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Home ‣ Mechanical Engineering ‣ Workshop Technology Comments

Question
If the sand is too fine, its permeability will be high.
Options
A. True
B. False

Correct Answer

False

Workshop Technology problems

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1. The electrode tip diameter (d) in spot welding should be equal to (where t = Thickness of plate to be welded)
Options
A. t
B. 1.5 t
C. 3 t
D. 6 t

Discuss

Correct Answer: 6 t

2. When the weld is made from left to right, it is known as back-hand welding.
Options
A. Agree
B. Disagree

Discuss

Correct Answer: Agree

3. In spot welding, the spacing between two spot weld should not be less than
Options
A. d
B. 1.5 d
C. 3 d
D. 6 d

Discuss

Correct Answer: 3 d

4. The catalysts are used to accelerate the chemical reaction during the process of ploymerisation of plastics.
Options
A. True
B. False

Discuss

Correct Answer: True

5. The addition of magnesium to cast iron increases its
Options
A. hardness
B. ductility and strength in tension
C. corrosion resistance
D. creep strength

Discuss

Correct Answer: ductility and strength in tension

6. The cold working of metals is carried out
Options
A. at the recrystallisation temperature
B. below the recrystallisation temperature
C. above the recrystallisation temperature
D. at any temperature

Discuss

Correct Answer: below the recrystallisation temperature

7. The current in electric resistance welding can be regulated by
Options
A. varying the input supply
B. changing the primary turns of the transformer
C. changing the secondary turns of the transformer
D. any one of the above

Discuss

Correct Answer: changing the primary turns of the transformer

8. Cold working requires much higher pressure that hot working.
Options
A. Correct
B. Incorrect

Discuss

Correct Answer: Correct

9. An oxidising process used for aluminium and magnesium articles is called
Options
A. galvanising
B. anodising
C. parkerising
D. sheradising

Discuss

Correct Answer: anodising

10. The operation of straightening a curved sheet metal, is known as
Options
A. drawing
B. squeezing
C. coining
D. planishing

Discuss

Correct Answer: planishing

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If the sand is too fine, its permeability will be high.

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