Q.1
In phase I application of x and R chart, the control limits obtained from the equations are treated as ____________
  • a) Final limits
  • b) Trial limits
  • c) Warning limits
  • d) Pattern limits
Q.2
LCL for the R chart is given by __________
  • a) D3 R
  • b) D2 R
  • c) R – D3 R
  • d) d2 R
Q.3
Which term is having a closest meaning as Sampling Distributions?
  • a) Control charts
  • b) On site inspection
  • c) Whole lot inspection
  • d) Acceptance sampling
Q.4
Process capability generally uses __________
  • a) Specifications
  • b) Control Limits
  • c) Process standard deviation
  • d) Mean of any one sample
Q.5
The process standard deviation is given by __________
  • a) R/d2
  • b) Rd2
  • c) 1/d2
  • d) R/d
Q.6
For any process, the sample ranges are, 1.2,1.5,1.1,1.4,1.The subgroup size isWhat will be the process standard deviation? Given: d2=2.and A2=0.577
  • a) 0.576
  • b) 2.322
  • c) 0.511
  • d) 2.463
Q.7
A tolerance diagram is also called ____________
  • a) Scatter diagram
  • b) Defect concentration diagram
  • c) Histogram
  • d) Tier chart
Q.8
Is there any relationship between specification limits and control limits of x and R charts?
  • a) Yes, Specification limits = Control limits
  • b) Yes, Control limits=Specification limits/2
  • c) No
  • d) Yes, Control limits*0.5 = Specification limits
Q.9
Control limits are ___________
  • a) Limits defined by customers
  • b) Limits driven by the natural variability of the process
  • c) Limits driven by the inherent variability of the process
  • d) Statistical limits
Q.10
The natural variability of the process is measured by ____________
  • a) Process mean
  • b) Sample standard deviation
  • c) Process standard deviation
  • d) Sample mean
Q.11
What type of chart will be used to plot the number of defectives in the output of any process?
  • a) x bar chart
  • b) R chart
  • c) c chart
  • d) p chart
Q.12
Process standard deviation is necessarily equal to the sample standard deviation of the same process.
  • a) True
  • b) False
Q.13
“There is no need of revision of control limits once calculated by the equations of control limits.
  • a) True
  • b) False
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