Related Questions

Silicon is not suitable for fabrication of light emitting diodes because it is
A An indirect band gap semiconductor
B Direct band gap semiconductor
C Wideband gap semiconductor
D Narrowband gap semiconductor
How much power (roughly) a light-emitting diode can couple into an optical fiber?
A 100 microwatts
B 440 microwatts
C 100 picowatts
D 10 milliwatts
E None of the above
Welded joint is superior to revetted joint in respect of ease of fabrication, weight and strength. Which of the following joints is the most suitable for pipes carrying fluids under high pressure and temperature?
A Flanged joint
B Expansion joint
C Bell and spigot joint
D None of these
The capacity of a material to be welded under the imposed fabrication conditions into a specific, suitably designed structure and to perform satisfactorily in the intended service is known as?
A Weldment
B Weld tab
C Weldability
D Tack weld
Which is the highest carbon-dioxide emitting country in the world?
A USA
B UK
C Germany
D Japan
The law which states that wave-length of maximum radiation is inversely proportional to the absolute of the emitting body is known as:
A Wien’s Displacement Law
B Ohm's Law
C Ferel's Law
D Ampere's Law
Radiant energy received by a body is proportional to (where, d = the distance between the object emitting radiation and that receiving it.)
A $$\sqrt {\text{d}} $$
B d
C d2
D d1.5
Identify the sentence in which the word element (s) refers to 'suitable or favourable environment. (1) There is an element of truth in your story. (2) Water is composed of elements of hydrogen and oxygen. (3) I feel out of my elements in political discussions. (4) Water is a natural element for fish
A (4)
B (3)
C (1) and (2)
D (1)
If A has 4 elements and B has 8 elements then the minimum and maximum number of elements in A∪B are respectively __
A 4,8
B 8,12
C 4,12
D 6,12
If the arrow of crystal diode symbol is positive w.r.t. bar, then diode is ___________ biased.
A forward
B reverse
C either forward or reverse
D none of the above

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