Related Questions

In leaf springs, the maximum bending stress developed in the plates is (where W = Load acting on the spring, $$l$$ = Span of the spring, n = Number of plates, b = Width of plates and t = Thickness of plates)
A $$\frac{{{\text{W}}l}}{{{\text{nb}}{{\text{t}}^2}}}$$
B $$\frac{{3{\text{W}}l}}{{2{\text{nb}}{{\text{t}}^2}}}$$
C $$\frac{{2{\text{W}}l}}{{{\text{nb}}{{\text{t}}^2}}}$$
D $$\frac{{3{\text{W}}l}}{{{\text{nb}}{{\text{t}}^2}}}$$
Silver halides are used in photographic plates because they are
A Oxidised in air
B Soluble in hyposolution
C Reduced by light
D Totally colourless
When two main plates are kept in alignment butting each other and riveted with cover plate on both sides of the main plates with two rows of rivets in each main plate, the joint is known as ________ double cover butt joint.
A Single riveted
B Double riveted
C Multi riveted
D None of these
When two plates are butt together and riveted with cover plates with two rows of rivets, the joint is known as
A Lap joint
B Butt joint
C Single riveted single cover butt joint
D Double riveted double cover butt joint
When two main plates are kept in alignment butting each other and riveted with cover plate on both sides of the main plates with two rows of rivets in each main plate, the joint is known as _______ double cover butt joint.
A Single riveted
B Double riveted
C Both (A) and (B)
D None of these
The computer has dramatically affected — photographic lenses are constructed.
A is the way
B that the way
C which way
D the way
The relation between the air base (B), photographic base (b), flying height (H) and the focal length (f) of a vertical photograph, is
A $${\text{B}} = \frac{{{\text{bH}}}}{{\text{f}}}$$
B $${\text{B}} = \frac{{\text{f}}}{{{\text{bH}}}}$$
C $${\text{B}} = \frac{{\text{b}}}{{{\text{fH}}}}$$
D $${\text{B}} = \frac{{\text{H}}}{{{\text{bf}}}}$$
Function of sodium thiosulphate (hypo) in development of photographic film/plate is to
A Brighten the faint images
B Remove metallic silver
C Convert silver chloride to silver
D Remove unexposed silver halide
The chemical used in developing photographic films is
A Silver bromide
B Hypo
C Sodium sulphate
D Hydroquinone
Exposure of a photographic plate to produce a latent image is an example of __________ reaction.
A Very slow
B Very fast
C Photochemical
D Both B and C

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