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Which of the following statement is correct
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(a) Both Peltier and Joule effects are reversible |
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(b) Both Peltier and Joule effects are irreversible |
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(c) Joule effect is reversible, whereas Peltier effect is irreversible |
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(d) Joule effect is irreversible, whereas Peltier effect is reversible |
For goldplating on a copper chain, the substance required in the form of solution is
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(a) Copper sulphate |
(b) Copper chloride |
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(c) Potassium cyanide |
(d) Potassium aurocyanide |
Which of the following is not the unit of self inductance
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(a) Weber/Ampere |
(b) Ohm-Second |
(c) Joule-Ampere |
(d) Joule Ampere–2 |
A 500 Hz modulating voltage fed into an FM generator produces a frequency deviation of 2.25 kHz. If amplitude of the voltage is kept constant but frequency is raised to 6 kHz then the new deviation will be
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(a) 4.5 kHz |
(b) 54 kHz |
(c) 27 kHz |
(d) 15 kHz |
A bar magnet of magnetic moment 200 A-m2 is suspended in a magnetic field of intensity 0.25 N/A-m. The couple required to deflect it through 30o is
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(a) 50 N-m |
(b) 25 N-m |
(c) 20 N-m |
(d) 15 N-m |
The energy of a charged capacitor resides in
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(a) The electric field only
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(b) The magnetic field only |
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(d) Neither in electric nor magnetic field |
(d) Neither in electric nor magnetic field |
In the given figure, the electron enters into the magnetic field. It deflects in ...... direction
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(a) + ve X direction |
(b) – ve X direction |
(c) + ve Y direction |
(d) – ve Y direction |