The impedance of piezo-electric crystals is
A.Negligible
B.Very low
C.Low
D.Average
E.High
Category: Production Engineering Mcqs
Permissible percentage of moisture in dry woods for pattern making is
A.Zero percent
B.1 – 2 percent
C.2 – 5 percent
D.Upto 15 percent
E.Upto 25 percent
Burr is
A.Unmachined portion of work piece
B.Boundary between finished and unifinished portion on a work piece
C.A marking or work piece to identify for correct position on a work piece
D.Burnt surface of a casting
E.Sharp edge remaining on the metal after curring, stamping or machining
The function of a chip breaker in a cutting tool is
A.To provide smooth path for long chips
B.To get long curled chips
C.To break the chips into short segrments
D.To remove chips from bed
E.None of the above
Railway rails are generally made of __________________?
A.Deam mild steel
B.Mild steel
C.Medium carbon steel
D.High carbon steel
E.Alloys steel containing 0.8 to 0.9% carbon
Continue reading “Railway rails are generally made of __________________?”
In ball bearing steels, chromium percentage is normally in the range
A.1 – 2 percent
B.2 – 3 percent
C.3 – 5 percent
D.5 – 10 percent
E.14 – 16 percent
The fuel used in pit furnace is generally
A.Wood
B.Charcoal
C.Oil
D.Coal
E.Coke
The decibel is
A.Unit of noise level
B.A logarithmic ratio between a measured quantity and a reference quantity
C.Quantity of noise per unit area
D.A logarithmic ratio between a measured quantity and 100
E.None of the above
With electronic circuits the accuracy that can be expected from scanners will lie in the range of
A.0.1 to 1%
B.5 to 10%
C.10 to 17.5%
D.20 to 25%
E.25 to 50%
The hardness of martensite in quenched plain carbon steels reaches almost a saturation value of carbon of about
A.0.20%
B.0.40%
C.0.60%
D.1.40%
E.None of the above
