The net magnetic moment is zero is case of
A.Ferromagnetic materials
B.Ferrimagnetic materials
C.Anti-ferromagnetic materials
D.All of the above
E.None of the above
Category: Mechanical Engineering Mcqs
The ignition coil acts as
A.An inductor
B.A capacitor
C.A RC circuit
D.A step up transformer
E.A step down transformer
The number of atoms per unit cell in BCC is
A.9
B.3
C.4
D.6
E.8
A hydro-electric site has a head of 100 m and an average discharge of 10m3/s. Assume 92% efficiency, for a greater speed of 6000 rpm, the specific speed of turbine would be
A.600
B.1000
C.1500
D.1900
E.None of the above
As per ISS a steel specified as T 75 W 18 Co 10 Cr 4V2 will not have (as constituent)
A.Cobalt
B.Chromium
C.Vanadium
D.Copper
Type of impeller used in mud pumps is
A.Shrouded
B.One side shrouded
C.Open
D.Double suction
E.Any of the above
Which of the following thermocouple can be used for temperatures above 1000?C
A.Platinum – Rhodium
B.Chromel – Alumel
C.High pressure Chromel – Copper
D.Any of the above
E.None of the above
The chemical used in generating acetylene is
A.Carbon
B.Charcoal
C.Crushed bone
D.Calcium carbonate
E.Calcium carbide
If a reduction in prices increases revenue, then the demand curve is said to be
A.Elastic
B.Inelastic
C.Unitary
D.Either elastic or inelastic
E.Not determinable from given data
In carbon steel castings
A.The percentage of carbon is less than 1.7%
B.The percentage of carbon is between 1.7% to 2%
C.The percentage for alloying elements is controlled
D.(A) and (C) above
E.(B) and (C) above
