Sunday, 28 May 2017

Multiple Choice Questions on Industrial Engineering (Most Asked)

bag pencil_colo_pen_file



  1. Name of midpoint of class interval with the highest frequency
    • standard deviation
    • mean
    • mode
    • median

  2. Process capability equal to
    • X̅ + 3σ’
    • 6σ’
    • σ’/n
    • 3σ’

  3. Name of graph used to represent cumulative frequency distribution
    • Histogram
    • Gantt chart
    • Bar chart
    • Ogive curve

  4. Cumulative frequency curve is also known as
    • Ogive curve
    • Histogram
    • Frequency polygon
    • Gantt chart

  5. The success of sampling inspection depends upon
    • Sample size
    • Lot size
    • All of these
    • Randomness of samples

  6. Which of the following is control charts for number of defects per unit
    • X̅ chart
    • C chart
    • R chart
    • U chart

  7. In a sampling plan, c is the acceptance number, then the rejection number is
    • c+1
    • 1-c
    • c-1
    • c/2

  8. The percent of defective in a lot that can be tolerated in only a specified proportion of the lot is called
    • AOQ
    • AQL
    • AOQL
    • LTPD

  9. In a p chart large sample size is generally
    • Advisable
    • Economical
    • Not economical
    • None of these

  10. Match the following
    (i) Cost of prevention
    (ii) Cost of appraisal
    (a) Cost of quality planning
    (b) Cost of maintaining quality level
    (c) Cost of quality audit
    • i – a , ii – c
    • i – a , ii – b
    • i – b , ii – a
    • i – c , ii – a

  11. Quality function is the responsibility of
    • quality control department
    • everybody working in the organisation
    • production department
    • inspection department

  12. What is meant by quality of the product?
    • degree of perfection at any cost
    • fitness for use at minimum cost
    • degree of perfection
    • fitness for use

  13. The costs associated with measuring, auditing the product is
    • cost of appraisal
    • cost of prevention
    • cost of production
    • cost of internal failure

  14. What is the basic objective of quality control in any organization?
    • Achieve customer’s satisfaction
    • Integrate quality development and quality improvement activities in the organization
    • All of these
    • Achieve optimum costs

  15. The maximum percent defective that the consumer finds acceptable is called
    • AOQL
    • AQL
    • AOQ
    • LOA

  16. Quality Circle is a ......
    • Problem solving technique
    • H.R.D. technique
    • All of these
    • Form of participative management

  17. Match the following
    (i) Producers risk
    (ii) Probability of acceptance
    (iii) Acceptance number
    (a) probability that the sampling will accept the lot
    (b) the probability of rejection of good product
    (c) the maximum number allowable defective in a lot
    • i – a , ii – c, iii - b
    • i – b , ii – a, iii - c
    • i – c , ii – a, iii - b
    • i – b , ii – a, iii - c

  18. Match the following
    (i) X̅ chart
    (ii) σ chart
    (a) shows the centering of the process
    (b) shows the variability of process
    (c) shows the uniformity of process
    • i – a , ii – c
    • i – b , ii – c
    • i – a , ii – b
    • i – c , ii – a

  19. Match the following
    (i) X̅ chart
    (ii) R chart
    (a) shows the centering of the process
    (b) shows the trend of process
    (c) shows the uniformity of process
    • i – b , ii – c
    • i – a , ii – c
    • i – a , ii – b
    • i – c , ii – a

  20. Match the following
    (i) (XmaxXmin) > 6σ’
    (ii) (Xmax – Xmin) < 6σ’
    (a) Process is in control
    (b) Necessary to maintain centering of the process
    (c) Defective always present
    • i – a , ii – b
    • i – b , ii – c
    • i – a , ii – c
    • i – c , ii – a

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Saturday, 18 March 2017

Common Questions - Answer about Refrigerants

refrigerator opened



  1. Commonly used refrigerant in domestic vapour compression system
    • Freon - 12
    • Ammonia
    • CCl4
    • All of these

  2. Commonly used refrigerant in vapor absorption system is
    • Aqua-ammonia
    • Freon-12
    • Water
    • Ammonia

  3. Identify the refrigerant and absorbent in Lithium bromide absorption system
    • Refrigerant - water, absorbent - Lithium bromide
    • Refrigerant - Lithium bromide, absorbent – water
    • Refrigerant – Ammonia, absorbent – Lithium bromide
    • Refrigerant - Lithium bromide, absorbent – Ammonia

  4. In following refrigerant, which has the lowest freezing point?
    • R-22
    • Ammonia
    • R-11
    • R-118

  5. Which of the following is an example azeotrope refrigerant?
    • R-502
    • R-100
    • R-40
    • R-14

  6. The boiling point of R-12 is
    • -29° C
    • 20.5° C
    • -73.6° C
    • 9° C

  7. Which of the following refrigerant is flammable and highly toxic?
    • Ammonia
    • Sulphur dioxide
    • Carbon dioxide
    • R-118
    R-118 is water

  8. Which of the following refrigerant has the lowest boiling point?
    • Carbon dioxide
    • Sulphur dioxide
    • Ammonia
    • Air

  9. Environmental protection agencies advice against the use of chloro-fluoro-carbon refrigerants because
    • It react with ozone layer
    • It cause green-house effect
    • It react with water vapour and cause acid rain
    • It react with oxygen and cause its depletion

  10. Freon refrigerants are an example of
    • Halo-carbon refrigerants
    • Hydro-carbon refrigerants
    • Azeotrope refrigerants
    • Inorganic refrigerants

  11. In case of leakage of freon refrigerant change colour of the flame of halide torch to
    • Bright green
    • Orange
    • Yellow
    • Blue

  12. Which of the following refrigerant widely used in domestic refrigerators?
    • Ammonia
    • Sulphur dioxide
    • Carbon dioxide
    • R-12

  13. Which of the following refrigerant has the highest critical pressure?
    • Ammonia
    • R-12
    • Sulphur dioxide
    • R-22

  14. From following examples identify the refrigerant has the highest freezing point?
    • R-12
    • Carbon dioxide
    • Sulphur dioxide
    • Ammonia

  15. Why R-12 is preferred over R-22 in deep freezers?
    • R-12 is miscible with oil over large range of temperatures
    • R-12 has lower freezing point
    • R-12 gives higher coefficient of performance
    • R-12 has lower boiling point

  16. Which of the following cycle uses air as the refrigerant?
    • BeIl-Coleman
    • Carnot
    • Stirling
    • Ericsson

  17. The specific volume of a refrigerant should be
    • Low
    • High
    • Normal
    • None of these

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