List of top Dairy Technology Questions on Heat Transfer and Unit Operations

Turbulence in the flow of milk in between plates is mainly achieved by
A device fitted on the crown plate of fire box and used to prevent damage of heating surface in case of low water level is
Two plates placed at 160 mm apart are maintained at 1200\(^\circ\)C and 80\(^\circ\)C. The heat transfer between the two bodies occur mainly due to
The extended heat transfer surfaces provided in heat exchangers are called as:
\(q = -k A \frac{\Delta T}{\Delta x}\) is called as
The process in which no heat is supplied or rejected and entropy is constant is known as:
The compression ratios of petrol engines lie in the range of
Calculate the regeneration efficiency if the milk is heated from an initial temperature of 4\(^\circ\)C to 67\(^\circ\)C in a regenerator and pasteurization was done at 74\(^\circ\)C.
The hot side and cold side pressure in the regenerator of a pasteurizer is controlled by which of the following?
The Kelvin temperature of a system can be measured by:
Which of the following does not affect the length of the time required to sterilize a food?
In a counter flow heat exchanger, cold fluid enters at 30\(^\circ\)C and leaves at 50\(^\circ\)C, whereas the hot fluid enters at 150\(^\circ\)C and leaves at 130\(^\circ\)C. What is the mean temperature difference?
All Three modes of heat transfer occurs in which of the following?
Calculate the temperature of milk coming out from a homogenizer if temperature at inlet is 64\(^\circ\)C and inlet and outlet pressures are 205 bar and 5 bar respectively
Natural convection is associated with which of the following dimensionless numbers?
Given below are two statements:
Statement (I): The rate of heat transfer to the thermal centre of a container depends on the size of container, but not the shape
Statement (II): The rate of heat transfer to the thermal centre of can is improved by agitating the container
In light of the above statements, choose the most appropriate answer from the options given below.
The "z" value of a micro-organism is 6°C and the temperature of processing is 105°C then the lethal rate of microorganism is
Which of the following laws are based on stress analysis of plastic deformation within the elastic limit?
Mechanical separation is applicable to:
One ton of refrigeration (TR) can be expressed as :
Which of the following is a unit of enthalpy?
In which component of the refrigeration system is the refrigerant stored?
Which of the following is not a type of expansion valve?
Ice cream freezers work on which of the following principles?
If net positive suction head (NPSH) = ______ the liquid can vaporize causing pump cavitation and failure of components.