ENTRANCE TEST – 2009 Multiple Questions and Answers.




21.The deviation of I-V graph from the straight line is due to:
A. Decrease in temperature and decrease in resistance
B. Increase in temperature and increase in resistance
C. Decrease in temperature and increase in resistance
D. Increase in temperature and decrease in resistance

22.The fractional change in resistance per Kelvin is known as
A. Temperature coefficient of resistance
B. Thermal coefficient
C. Linear coefficient of expansion
D. Volumetric coefficient of expansion

23.The energy supplied by the cell to the charge carriers is derived from the conversion of:
A. Heat energy into Electrical energy
B. Chemical energy into Electrical energy
C. Solar energy into Electrical energy
D. Mechanical energy into Electrical energy

24.Force experienced by a moving change in a magnetic field is:
A. F = BA cosÏ´
B. F = μo NI
C. F = q (v x B)
D. F = I (L x B)

25.What shunt resistance must be connected across a Galvanometer of 20 Ω resistance which gives full scale deflection with 2.0 A current, so as to convert it into an Ammeter of range 10 A?
A. 5 Ω
B. 2 Ω
C. 3 Ω
D. 4 Ω

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