A. Ultra pure metals
B. Metal oxides
C. Iron-copper alloys
D. Nickel-chromium alloys
Related Mcqs:
- Thermistors are used in ____________ devices?
A. Voltage measuring
B. Temperature measuring
C. Temperature compensating
D. Both B. & C. - Thermistors which have a very high temperature co-efficient of resistivity belong to the class of solid called________________?
A. Dielectrics
B. Insulators
C. Semi conductors
D. Conductors - Stalagmometer is used for the measurement of__________________?
A. Kinematic viscosity
B. Surface tension
C. Refractive index
D. Optical activity - Non-metallic diaphragm used as pressure sensor in instruments is generally made of__________________?
A. Teflon
B. Synthetic rubber
C. Bakelite
D. Thick paper - Identify an unbounded input from inputs whose transfer functions are given below______________?
A. 1
B. 1/S
C. 1/S2
D. 1/(S2 + 1) - Liquid flow rate in an open channel cannot be measured by a/an __________________?
A. Orifice meter
B. Cipolletti weir
C. Rectangular weir
D. V-notch - Which of the following is not a differential pressure flow meter ?
A. Rotameter
B. Flow nozzle
C. Orificemeter
D. Venturimeter - The operation of a Rotameter is based on ________________?
A. Variable flow area
B. Rotation of a turbine
C. Pressure drop across a nozzle
D. Pressure at a stagnation point - Emission spectroscopy is used for__________________?
A. Solids and metal analysis
B. Determining water purity
C. Determination of CO2 in gases
D. NOx determination - Which of following error integral is considered as the best criterion in controller settings ?
A. ∫0 ∞ |e| dt
B. ∫0 ∞ |e2| dt
C. ∫0 ∞ e2 dt
D. None of these
