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3606

Which of the following operations can be used to convert an alternative current dynamo into a direct current dynamo

  • A. number of turns in the coil is increased
  • B. strength of the field magnet is increased
  • C. slip rings are replaced with split ring commutator
  • D. coil is wound on a soft iron armature
View Answer & Discuss (1) JAMB 2017
3607

The net capacitance in the circuit above is

  • A. 80µF
  • B. 6.0µF
  • C. 4.0µF
  • D. 2.0µF
View Answer & Discuss (5) JAMB 2017
3608

The instrument used to measure the pressure of a gas is

  • A. barometer
  • B. thermometer
  • C. hydrometer
  • D. manometer
View Answer & Discuss (5) JAMB 2017
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3609
A man of mass 50kg ascends a flight of stains 5m high in 5 seconds. If acceleration due to gravity is 10ms\(^{-2}\) the power expended is
  • A. 100w
  • B. 200w
  • C. 400w
  • D. 500w
View Answer & Discuss JAMB 2017
3610
A radio station broadcast at a frequency of 600KHZ. If the speed of light in air is 3 × 108ms\(^{−1}\). Calculate the wavelength of the radio wave
  • A. 2.20 × 10\(^3\)m
  • B. 5.0 × 10\(^2\)m
  • C. 5.0 × 10\(^5\)m
  • D. 11.8 × 10\(^{11}\)m
View Answer & Discuss (3) JAMB 2017
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts