List of top Questions asked in ICAR AIEEA (PG)- 2021

The equation of Wahl's stress factor (K) is expressed by where C is spring index:

In spur gears, the module is defined as ratio of:

The different relations for Young's Modulus (E), Bulk Modulus (K) and Modulus of Rigidity (G) are given by:
A. \(E = 2G(1 + \mu)\), \(\mu\) is Poisson's ratio
B. \(E = 3K(1 + 2\mu)\)
C. \(E = 2G(1 - \mu)\)
D. \(E = 3K(1 - 2\mu)\)
E. \(E = 2K(1 - 2\mu)\)
Choose the most appropriate answer from the options given below:

Zeroth order of reaction, in reaction kinetics, is given by:
A. \(\frac{dc}{dt} = -kc\)
B. \(C = C_0 - kt\)
C. \(\ln \left(\frac{C}{C_0}\right) = -kt\)
D. \(\frac{dc}{dt} = -k\)
Choose the most appropriate answer from the options given below:

In reaction kinetics, for first order reaction, the relation between rate constant (K) and decimal reduction time (D) is:

The process variables, determining the effectiveness of cleaning of dairy equipment are:
A. Temperature
B. Contact time
C. Concentration
D. Physical action
Choose the most appropriate answer from the options given below:

The closed containers, such as milk tanks and closed vats, may be effectively sanitized by:

In a steam boiler, hot gases form a fire transfer heat to water, which vaporizes at constant temperature. In a certain case, the total change in entropy is 2.045 kJ/K in this process when temperature of surroundings is 30°C. What is the increase in unavailable energy due to irreversible heat transfer?

The equation of the inequality of Clausius is:

In case of the thermodynamic system:
A. System boundary separates the system and surroundings.
B. System boundary may be fixed only
C. Everything external to system is called surroundings.
D. System boundary may be moving only.
E. System boundary may be either fixed or moving.
Choose the correct answer from the options given below:

The 'Aspect Ratio' of the drying chamber of a spray dryer is the ratio of:

In spray dryer, the velocity of particle and its trajectory determine the:

Which of the following device is used in evaporator to prevent the assimilation of liquid droplets in the discharging vapour stream?

The BH curve of a ferromagnetic material is:

In an a.c. circuit the resistance (R), inductance (L) and capacitance (C) are connected in series. The impedance (Z) of the circuit would be:

Which of the following statements on alternating current circuits are true?
A. In circuits with primarily inductive loads, the current leads the voltage.
B. The ratio of resistance to impedance of A.C. circuit is known as power factor of the circuit.
C. Two alternating quantities reach their maximum or minimum value at different time, keeping any equal phase angle between them are called 'in phase'
D. The steady state d.c. current which produce the same heat as that produced by alternating current in a given time and given resistance is known as the root mean square value of alternating current.
Choose the most appropriate answer from the options given below:

The self inductance of two coils are 9 mH and 25 mH. If the coefficient of coupling is 0.5, the mutual inductance of coils is:

Which of the following statements on cavitation in centrifugal pumps is correct?
A. Cavitation occurs when pressure in suction line is too high relative to vapour pressure of pumped liquid.
B. Cavitation occurs when pressure in suction line is too low relative to vapour pressure of pumped liquid.
C. The tendency to cavitate decreases when volatile liquids are pumped
D. Cavitation can be avoided by decreasing the pressure drop in suction line
Choose the most appropriate answer from the options given below:

A double action reciprocating pump has length of stroke 'L' metre, area of cross section 'A' m². What will be the discharge 'Q' m³/s from the pump, if the crank speed is 'N' RPM?

In the casing of a centrifugal pump the energy of water is converted into energy, before the water leaves the casing. Fill in the blanks appropriately.

The ideal conditions for ripening of Cheddar cheese are:

The function of one of following is to desuperheat the vapour coming out of compressor in multi compression refrigeration system:

In vapour compression refrigeration system, the refrigerant has maximum temperature:

A good refrigerant should have:

In HTST milk pasteurizer, the average residence time is determined from the volumetric flow rate of milk and the: