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Free tnpsc model questions Online Test - MeritNotes
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Online Exam
No. of Questions :10
Remaining Time :
1. In a hydel station the motion produced in turbines is due to the
(a)
Flow of water
(b)
Production of steam
(c)
Burning of diesel
(d)
Burning of coal
2. Resistivity of semiconductor depends
(a)
Atomic nature of semiconductor
(b)
Shape and atomic nature of semiconductor
(c)
Shape of semiconductor
(d)
Length of semiconductor
3. Which one of the following is used in storage batteries?
(a)
Copper
(b)
Zinc
(c)
Lead
(d)
Tin
4. Laws of electrolysis is given by
(a)
Maxwell
(b)
Lenz
(c)
Bohar
(d)
Faraday
5. The electrolyte in a car battery is
(a)
Nitric acid
(b)
Distilled water
(c)
Sulphuric acid
(d)
Hydrochloric acid
6. A diode as a rectifier converts
(a)
High voltage into low voltage and vice-versa
(b)
Varying DC into constant dc
(c)
DC to AC
(d)
AC to DC
7. All the magnetic materials lose their magnetic properties when
(a)
Dipped in water
(b)
Dipped in oil
(c)
Brought near a piece of iron
(d)
Strongly heated
8. The frequency band used for radar relay-systems and television is
(a)
UHF
(b)
VLF
(c)
VHF
(d)
EHF
9. A transistor is made of
(a)
Intrinsic semiconductors
(b)
Doped semiconductors
(c)
A metal piece sandwiched between two intrinsic semiconductors
(d)
None of the above
10. When the radius of the T.G. coil is decreased, its sensitiveness
(a)
Increases
(b)
Decreases
(c)
Remains unaltered
(d)
None of these
