Q: 12641 The electronic device which is used as a switch or amplifier is called ?

  1. 
    Diode
  2. 
    Resistor
  3. 
    Transistor
  4. 
    Transformer

Q: 12642 Which of the following principleis used to produce ‘low-temperatures’ ?

  1. 
    Super conductivity
  2. 
    Joule-Kelvin effect
  3. 
    Thermo-electric effect
  4. 
    Adiabatic demagneti-sation

Q: 12643 What is meant by intermediate goods and services?

  1. 
    The same as capital goods, such as plants, buildings, vehicles, and machinery.
  2. 
    Products which one firm buys off another and then uses up in its own products.
  3. 
    All inputs bought by firms, including labor and raw materials.

Q: 12644 In which of the following processes is energy released ?

  1. 
    Respiration
  2. 
    Photosynthesis
  3. 
    Ingestion
  4. 
    Absorption

Q: 12645 Heat transfer horizontally within the atmosphere is called?

  1. 
    Conduction
  2. 
    Convection
  3. 
    Absorption
  4. 
    Advection

Q: 12646 How many kgs are in one ton?

  1. 
    707
  2. 
    907
  3. 
    807
  4. 
    607

Q: 12647 Angle of friction and angle of repose are?

  1. 
    equal to each other
  2. 
    not equal to each other
  3. 
    proportional to each other
  4. 
    None of these

Q: 12648 Intensity of gravitational field of earth is maximum at?

  1. 
    Poles
  2. 
    Equator
  3. 
    Center of earth
  4. 
    Surface

Q: 12649 A transformer works on the principle of _______________?

  1. 
    Self induction
  2. 
    Mutual induction
  3. 
    Generator
  4. 
    Inverter

Q: 12650 Pluviometer measures ___________?

  1. 
    Wind
  2. 
    Strength of Plywood
  3. 
    Rainfall
  4. 
    None of these

Q: 12651 Atephobia is fear of _________?

  1. 
    Imperfection
  2. 
    Heights
  3. 
    Attitude
  4. 
    None of these

Q: 12652 Male birds are ________ colorful than female birds.

  1. 
    Less
  2. 
    More
  3. 
    Equal
  4. 
    None of these

Q: 12653 The scientist who first sent electromagnetic waves to distant places is?

  1. 
    James Clerk Maxwell
  2. 
    Heinrich Hertz
  3. 
    Thomas Alva Edison
  4. 
    John Logie Baird

Q: 12654 The period of revolution of a geostationary satellite is?

  1. 
    365 days
  2. 
    30 days
  3. 
    24 hours
  4. 
    changing continuously

Q: 12655 The time period of a pendulum when taken to the Moon would?

  1. 
    remain the same
  2. 
    decrease
  3. 
    become zero
  4. 
    increase

Q: 12656 Which type of reaction produces the most harmful radiation?

  1. 
    Fusion reaction
  2. 
    Fission reaction
  3. 
    Chemical reaction
  4. 
    Photo-Chemical reaction

Q: 12657 The atmospheric air is held to the Earth by?

  1. 
    gravity
  2. 
    winds
  3. 
    clouds
  4. 
    rotation of the Earth

Q: 12658 Lambert’s law is related to?

  1. 
    Reflection
  2. 
    Refraction
  3. 
    Interference
  4. 
    Illumination

Q: 12659 Electrostatic precipitator is used to control?

  1. 
    Air pollution
  2. 
    Water pollution
  3. 
    Solid waste
  4. 
    Noise pollution

Q: 12660 In an MRI machine, which one of the following is used?

  1. 
    Sound wave
  2. 
    ‘X’-ray
  3. 
    Ultra-sound wave
  4. 
    Magnetic wave