Please select a subject first
Advertisements
Advertisements
A fuse is a short piece of wire of high ______ and of material of low ______.
Concept: undefined >> undefined
A fuse wire is made of an alloy of ______ and ______. If the current in a circuit exceeds the current rating of the fuse wire, it ______.
Concept: undefined >> undefined
Advertisements
A fuse is connected in ______ with the ______ wire.
Concept: undefined >> undefined
Why is the fuse wire fitted in a porcelain casing?
Concept: undefined >> undefined
How is a fuse put in an electric circuit?
Concept: undefined >> undefined
Describe with the aid of a diagram some form of a fuse which is used in the electric lighting circuit of a house. Give two reasons why a fuse must not be replaced by an ordinary copper wire.
Concept: undefined >> undefined
Two fuse wire of same length are rated 5 A and 20 A. Which of the two is thicker?
Concept: undefined >> undefined
Explain the meaning of the statement ‘the current rating of a fuse is 5 A’.
Concept: undefined >> undefined
‘A fuse is rated 8 A’. can it be used with an electrical appliance of rating 5kW, 200V?
Concept: undefined >> undefined
An electric kettle is rated 3 kW, 250 V. Give reason whether this kettle can be used in a circuit which contains a fuse of current rating 13 A.
Concept: undefined >> undefined
Name the quality which is measured in eV
Concept: undefined >> undefined
Name the quality which is measured in Wh.
Concept: undefined >> undefined
Name the quality which is measured in kW.
Concept: undefined >> undefined
Two wires of the same material and same length have radii 1 mm and 2 mm respectively. Compare their resistances.
Concept: undefined >> undefined
A light ray suffers reflection and refraction at the boundary in passing from air to water. Draw a neat labelled ray diagram to show it.
Concept: undefined >> undefined
A body of mass m is moving with a uniform velocity u. A force is applied on the body due to which its velocity changes from u to v. How much work is being done by the force?
Concept: undefined >> undefined
Is it possible that no transfer of energy may take place even when a force is applied to a body?
Concept: undefined >> undefined
The speed of light in air is 3 × 108 m s-1. Calculate the speed of light in glass. The refractive index of glass is 1.5.
Concept: undefined >> undefined
Name two places in india where electricity is generated from nuclear power plants.
Concept: undefined >> undefined
A uniform meter scale is in equilibrium as shown in the diagram :
(i) Calculate the weight of the meter scale.
(ii) Which of the following options is correct to keep the ruler in equilibrium when 40 gf wt is shifted to 0 cm mark ?
F is shifted towards 0 cm
or
F is shifted towards 100 cm
Concept: undefined >> undefined
