1. : Process equipment design in food engineering mainly deals with?
(A) Soil fertility
(B) Design of machines for processing and storage
(C) Increasing fertilizer use
(D) Improving seed germination
2. : The factor of safety is used in equipment design to?
(A) Reduce cost only
(B) Account for uncertainties in load and material properties
(C) Increase weight of equipment
(D) Speed up operation
3. : The SI unit of stress used in design calculations is?
(A) Pascal (Pa)
(B) Joule (J)
(C) Watt (W)
(D) Newton (N)
4. : The main function of a heat exchanger is to?
(A) Store food
(B) Transfer heat between fluids
(C) Compress gases
(D) Increase pressure
5. : The design pressure of a vessel is usually taken as?
(A) Equal to operating pressure
(B) Slightly higher than operating pressure
(C) Lower than operating pressure
(D) Double the operating pressure
6. : Which type of stress is most important in thin-walled pressure vessel design?
(A) Bending stress
(B) Hoop stress
(C) Torsional stress
(D) Shear stress
7. : In equipment design, corrosion allowance is provided to?
(A) Reduce weight
(B) Compensate for material loss during service life
(C) Increase stress
(D) Improve thermal conductivity
8. : The most common material used for food processing equipment is?
(A) Stainless steel
(B) Cast iron
(C) Copper
(D) Aluminum
9. : The purpose of baffles in a shell-and-tube heat exchanger is to?
(A) Increase pressure
(B) Improve heat transfer by directing fluid flow
(C) Store fluid
(D) Reduce turbulence
10. : The design of storage silos mainly depends on?
(A) Soil type
(B) Properties of stored material like bulk density and flowability
(C) Temperature only
(D) Type of fertilizer used
11. : The term “L/D ratio” in equipment design refers to?
(A) Load/Displacement ratio
(B) Length to Diameter ratio of a vessel
(C) Light/Dark ratio
(D) Load/Density ratio
12. : Agitators in mixing tanks are designed to?
(A) Reduce microbial growth
(B) Improve mixing and mass transfer
(C) Decrease temperature
(D) Increase viscosity
13. : Which law is used for heat conduction in equipment design?
(A) Newton’s law of cooling
(B) Fourier’s law
(C) Fick’s law
(D) Boyle’s law
14. : The main function of jackets in food processing vessels is?
(A) Provide mechanical strength
(B) Allow heating or cooling of the product
(C) Reduce corrosion
(D) Store liquid
15. : The thickness of pressure vessels is calculated using?
(A) Lame’s equation
(B) Hoop stress formula
(C) Pascal’s law
(D) Boyle’s law
16. : Which type of stress dominates in thick-walled pressure vessels?
(A) Bending stress
(B) Radial stress
(C) Hoop stress
(D) Shear stress
17. : Safety valves in process equipment are provided to?
(A) Reduce weight
(B) Prevent overpressure conditions
(C) Increase strength
(D) Control temperature
18. : The term “creep” in materials design refers to?
(A) Sudden fracture under high load
(B) Slow deformation under constant stress at high temperature
(C) Corrosion failure
(D) Fatigue due to vibration
19. : Heat exchangers are classified based on?
(A) Temperature and pressure
(B) Flow arrangement (parallel, counterflow, crossflow)
(C) Vessel thickness
(D) Refrigerant used
20. : Which factor affects mixing efficiency in equipment design?
(A) Impeller type and speed
(B) Soil texture
(C) Crop variety
(D) Storage conditions
21. : The most common failure mode in rotating equipment like pumps is?
(A) Cavitation
(B) Freezing
(C) Rusting only
(D) Vaporization
22. : The purpose of insulation in process equipment is to?
(A) Increase load
(B) Reduce heat loss or gain
(C) Improve corrosion resistance
(D) Reduce mixing
23. : The Reynolds number is important in equipment design because it indicates?
(A) Stress level
(B) Flow regime (laminar or turbulent)
(C) Temperature range
(D) Material strength
24. : Which type of material failure occurs due to repeated loading?
(A) Creep
(B) Fatigue
(C) Corrosion
(D) Buckling
25. : The ultimate goal of process equipment design is to?
(A) Increase soil productivity
(B) Ensure safety, efficiency, and durability of operations
(C) Increase fertilizer use
(D) Reduce labor wages