A. High temperature heating medium (a petroleum product)
B. Product of coal tar distillation
C. Very heat sensitive material
D. None of these
Related Mcqs:
- Hydro-cyclone is a____________________?
A. Crusher
B. wet classifier
C. Dry classifier
D. Magnetic separator - Plastics as a material of construction suffer from the drawback of low_________________?
A. Machinability
B. Density
C. Strength
D. Plastic deformation - Carnot cycle is also termed as the constant _________________ cycle in thermodynamics?
A. Entropy
B. Pressure
C. Volume
D. Heat - Principal alloying elements of cast tool alloys which have very high wear resistance & high temperature strength are ?
A. Cobalt, chromium & tungsten
B. Cobalt, chromium & nickel
C. Molybdenum, tungsten & chromium
D. Cobalt, zirconium & molybdenum - Lead is poured into the joint between two _______________ pipes ?
A. Mild steel
B. Concrete
C. Cast iron
D. Asbestos cement - The mechanism which changes the value of manipulated variable in response to the output signal from the control unit is called the___________________?
A. Final control element
B. On-off control
C. Floating control action
D. None of these - Addition of _____________________ to steel does not impart hardness?
A. Nickel
B. Copper
C. Chromium
D. Silicon - Ammonia leakage in the refrigeration system is detected by_________________?
A. Sulphur stick, which on detection gives white smoke
B. Using chemical reagents
C. Its smell
D. Soap solution - Case hardening of a material is__________________?
A. Followed by tempering or carburising
B. Preceded by its tempering
C. Done to get a soft ductile interior with a very hard surface
D. Carried out to get extreme hardness in its core - In case of simple harmonic motion, displacement is proportional to the_________________?
A. Velocity
B. Acceleration
C. Both A. & B.
D. Neither A. nor B.
