Related Questions

The hot resistance of the bulb's filament is higher than its cold resistance because the temperature coefficient of the filament is
A Zero
B Negative
C Positive
D About 2 ohms per degree
Electric bulb filament is made of :
A Copper
B Aluminum
C Zinc
D Tungsten
The filament of an electric bulb is made of
A tungsten
B nichrome
C graphite
D iron
An electric filament bulb can be worked from
A D.C. supply only
B A.C. supply only
C Battery supply only
D All above
The material used in the filament of electric bulbs is
A Nichrome
B Tungsten
C Constantan
D German silver
Intermediate filament vimentin is present in
A Fibroblasts
B Macrophages
C Striated muscle cells
D Astrocytes
E Nonkeratinized stratified squamous epithelium
The individual chain of cells or filament in the colony of Nostoc is known as
A Trichome
B Heterocyst
C Hormogonia
D None of the above
Each stamen has a slender stalk or filament at the top of which a pollen bearing organ is present.
A Stigma
B Anther
C Filament
D Ovary
Resistance of carbon filament lamp as the applied voltage increases.
A Increases
B Decreases
C Remains same
D None of the above
In case of wet spinning of polymers, the polymer solution is forced through spinnerates into, a coagulating bath to give a filament form. Wet spinning is not used in case of the __________ fibres.
A Viscose rayon
B Acrylic
C Polyvinyl acetate
D Saturated polyester

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