Engineering
Engineering MCQs With Answers
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In PERT project management, the activity variance (sigma^2) is calculated using optimistic (a) and pessimistic (b) time estimates as:
A[(b - a) / 6]^2
B[(b + a) / 6]^2
C[(b - a) / 4]^2
D[(b - m) / 6]^2
In CPM network diagramming, a dummy activity is used to:
ARepresent an activity consuming maximum time and cost
BEstablish logical precedence relationship without consuming time or resources
CConnect initial and final nodes directly
DDelay critical path activities
The sound pressure level corresponding to the threshold of human hearing is standardized at:
A0 dB
B20 dB
C60 dB
D100 dB
Which wastewater treatment unit process works primarily on an aerobic suspended-growth biological mechanism?
ATrickling Filter
BActivated Sludge Process (ASP)
CAnaerobic Digester
DSeptic Tank
The minimum radius of curvature for a circular railway curve of 1 degree (1° curve on 30m arc) is approximately:
A573 m
B1720 m
C1146 m
D860 m
The presence of excessive iron and manganese in municipal water supply causes:
ADental fluorosis
BReddish-brown staining of laundry and plumbing fixtures
CMethemoglobinemia (blue baby disease)
DGoiter and thyroid disorders
The maximum safe design speed on a horizontal highway curve without considering side friction depends on superelevation ‘e’ and curve radius ‘R’ as:
Av = sqrt(g * R * e)
Bv = g * R * e
Cv = sqrt(g * R / e)
Dv = g * R / e
In bitumen testing, the penetration test measures which physical property of asphalt bitumen?
AViscosity at high temperature
BHardness or consistency of bitumen
CDuctility under tensile load
DFlash and fire point
What type of turbine is a Pelton wheel turbine?
ALow head impulse turbine
BHigh head impulse turbine
CMedium head reaction turbine
DHigh head axial flow reaction turbine
The most economical trapezoidal open channel section has a hydraulic radius (R) equal to:
AHalf of flow depth (y / 2)
BEqual to flow depth (y)
CTwice flow depth (2y)
DOne third flow depth (y / 3)