ipika Pallikkal
C:-0.P. Jaisha
D:-Tintu Luka
Correct Answer:- Option-D
Question20:-The co-operative dairy products entrepreneurship MILMA was established in the year...
A:-1980
B:-1970
C:-1960
D:-1950
Correct Answer:- Option-A
Question21:-A free electron means?
A:-All the electrons in an atom.
B:-The electrons not belongs to the atom itself.
C:-valance electrons which are loosely attached to the nucleous.
D:-All the above
Correct Answer:- Option-C
Question22:-The speed with which the effect of emf is experienced at all parts of a conductor resulting the flow of current is
A:-Velocity of charge
B:-Velocity of propagation of electric field
C:-Speed of response
D:-None of above
Correct Answer:- Option-B
Question23:-When a potential difference is applied to a resistor the heat is produced by
A:-Due to the collision of free electrons with the molecules or atoms of the resistor
B:-Power dissipation
C:-Speed of response
D:-None of above
Correct Answer:- Option-A
Question24:-On application of heat on electrolyte it exhibit
A:-Positive temp. coefficient
B:-No change resistance
C:-Resistance will increase
D:-Negative temp. Coefficient.
Correct Answer:- Option-D
Question25:-An operational amplifier is a
A:-dependent source
B:-Independent source
C:-model source
D:-None of above
Correct Answer:- Option-A
Question26:-A wire of resistance of 6 chms is bent in the form of a circle , the effective resistance between two points on
any diameter is
A:-6 chm
B:-12 ohm
C:-1.5 07+
D:-9 chm
Correct Answer:- Option-C
Question27:-A wire of resistance R ohm is streatched to double its length, then its resistance become
கங்க
B:-R/2
6:8
D:-4R
Correct Answer:- Option-D
Question28:-Two parallel wires camying current in opposite direction
A:-Attracts each other
B:-Repel each other
C:-cancel each other
D:-None of the above