A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency. This is __________ criterion. Bode stability None of these Nyquist Routh stability TRUE ANSWER : ? YOUR ANSWER : ?
Bode stability method uses __________ loop transfer function. Open Neither A nor B Here Closed Either A Or B Here TRUE ANSWER : ? YOUR ANSWER : ?
Zirconia probe is used for the continuous measurment of __________ flue gases going out of the furnace. Carbon dioxide in Carbon monoxide in Oxygen in Temperature of TRUE ANSWER : ? YOUR ANSWER : ?
Working principle of mercury in glass thermometer is based on the __________ of mercury with increase in temperature. Differential linear expansion Volumetric expansion Increase of pressure Increase of thermal conductivity TRUE ANSWER : ? YOUR ANSWER : ?
__________ is undesirable in thermocouples used in industries, Linear relation of emf to temperature Corrosion resistance Non-linear relation of emf to temperature Oxidation resistance TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following filled system expansion thermometer has the capability to measure the lowest temperature? Mercury in steel thermometer Fused metal (Na or K) in steel thermometer Alcohol in glass thermometer Mercury in glass thermometer TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is not a variable area flow meter? Magnetic flow meter Rotameter Orifice and tapered plug meter Piston type meter TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following thermocouples can measure the maximum temperature? Tungsten-molybdenum Iron-constantan Platinum-rhodium Chromel-alumel TRUE ANSWER : ? YOUR ANSWER : ?
Pirani gauge is used for the measurement of Very high pressure Liquid level under pressure High vacuum Liquid level at atmospheric pressure TRUE ANSWER : ? YOUR ANSWER : ?
The __________ of a vapor pressure thermometer is a secondary element. Bourdon tube Bulb Pointer None ofthese TRUE ANSWER : ? YOUR ANSWER : ?