Q.1

An amplitude ratio of 0.1 corresponds to __________ decibels.

  • 20
  • -20
  • 10
  • -10
Q.2

For increased speed of response of an expansion pressure spring thermometer, the thermometer bulb should have a

  • large area but small mass.
  • high thermal conductivity.
  • small specific heat.
  • all'a', 'b' & 'c'.
Q.3

The __________ of a vapor pressure thermometer is a primary element.

  • pointer
  • Bourdon tube
  • bulb
  • none of these
Q.4

Humidity of air can be determined by a

  • chromatograph
  • sling psychrometer
  • mass spectrometer
  • polarimeter
Q.5

Which of the following thermocouples can measure the maximum temperature ?

  • Platinum-rhodium
  • Tungsten-molybdenum
  • Chromel-alumel
  • Iron-constantan
Q.6

The amplitude ratio for the sinusoidal response of a __________ is 1.

  • first order system
  • second order system
  • transportation lag
  • none of these
Q.7

Routh test

  • criterion provides information about the actual location of roots.
  • cannot be used to test the stability of a control system containing transportation lag.
  • criterion is not applicable to systems with polynomial characteristic equation.
  • can not determine as to how many roots of the characteristics equation have positive real roots.
Q.8

Pressure of 0.absolute psi can be measured by __________ gauge.

  • Mcloid
  • Pirani
  • thermocouple
  • none of these
Q.9

The time constant of a first order process with resistance R and capacitance C is

  • R + C
  • R - C
  • RC
  • 1/RC
Q.10

The amplitude ratio for the sinusoidal response of a __________ is 1.

  • first order system
  • second order system
  • transportation lag
  • none of these
Q.11

Flame photometry is used for the determination of compositional analysis of

  • solids
  • alkali metals
  • natural gas
  • isotopes
Q.12

Which of the following thermocouples can measure the maximum temperature ?

  • Platinum-rhodium
  • Tungsten-molybdenum
  • Chromel-alumel
  • Iron-constantan
Q.13

The amplitude ratio for the sinusoidal response of a __________ is 1.

  • first order system
  • second order system
  • transportation lag
  • none of these
0 h : 0 m : 1 s