Related Questions

In a mixer, the quantity, (v. L/D) is termed as __________ number(where, v = longitudinal velocity of material, L = length of the mixer, D = diffusivity in axial mixing).
A Weber
B Peclet
C Brinkman
D Schmidt
__________ is the most suitable for compounding rubber and plastic solids.
A Banbery mixer
B Pan mixer
C Pug mill
D Charge can mixer
Natural rubber is obtained from latex, which is a colloidal dispersion of rubber in water. Which of the following is used as a coagulant in latex?
A Ammonium alum
B Potassium alum
C Both A & B
D Neither A nor B
Styrene-butadiene-rubber (SBR) as compared to natural rubber has
A Poorer tensile strength
B Poorer resistance to oxidation
C Greater amount of heat build-up under heavy loading
D All of the above
Styrene butadiene rubber (SBR) as compared to natural rubber has
A Poor tensile strength
B Poorer resistance
C Greater amount of heat build up heavy loading
D All of the above
In a radar-set receiver, the usual mixer stage is
A And FET
B A tunnel diode
C A silicon crystal
D A Rochelle salts crystal
What is the local oscillator (mixer) frequency of the satellite with an uplink frequency in GHz band?
A 3500 MHz
B 4500 MHz
C 2225 MHz
D 2555 MHz
In superhetrodyne receiver, the input at mixer stage is ___________
A IF and RF
B RF and AF
C IF and AF
D RF and local oscillator signal
Mixing mechanism employed in a pan mixer is by
A Mulling
B Kneading
C Dispersion
D None of these
Lower part of hot metal mixer are lined with __________ bricks.
A Superduty fireclay
B High alumina
C Silica
D Carborundum

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