Solve your IGNOU Doubts

Question:

Unsupervised classification

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Question:

Change detection techniques

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Question:

Give an overview of various image fusion techniques.

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Question:

What are radiometric errors? Give a detailed account of radiometric image corrections techniques.

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Question:

Linear image enhancement techniques

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Question:

UAV based remote sensing

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Question:

LiDAR data products

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Question:

Give an account of the active microwave remote sensing and its application potential.

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Question:

Describe principles of thermal remote sensing. Also discuss its application potential. Support your answer with the help of neat well labelled diagrams, wherever necessary

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Question:

Imaging spectroscopy

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Question:

Photogrammetry

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Question:

The following data comprising the number of customers (in hundred) and monthly sales (in thousand Rupees):

Number of Customers (in hundred)		4		6		6	8			10		14		18		20		22	26		28	30
Monthly Sales (in thousand Rs)		1.8		3.5		5.8	7.8			8.7		9.8		10.7		11.5		12.9	13.6		14.2	15

Calculate the residuals and determine the standardised residuals for the model

$Y = 2.6185 + 0.4369 X$

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Question:

Use graphical method to minimise the time added to process the following jobs on the machines shown:

Job 1:

Sequence

Time

Job 2:

Sequence

Time

Calculate the total time elapsed to complete both the jobs

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Question:

A department head has four subordinates, and four tasks to be performed. The subordinates differ in efficiency, and the tasks differ in their intrinsic difficulty. His estimate, of the time each man would take to perform each task, is given in the table below:

Tasks	Subordinates
	E	F	G	H
A	18	26	17	11
B	13	28	14	26
C	38	19	18	15
D	19	26	24	10

How should the tasks be allocated, one to a subordinate, so as to minimise the total man hour?

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Question:

Solve the following LPP using Simplex method:
Maximize $Z = x_1 + 2x_2$
Subject to the Constraints: $- x_1 + 2x_2 \leq 8$
$x_1 + 2 x_2 \leq 12$
$x_1 - x_2 \leq 3$
$x_1, x_2 \geq 0$

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Question:

Solve the following LPP using graphical method:
Maximize $Z = 3x_1 + 2x_2$
Subject to the Constraints:
$-2x_1 + x_2 \leq1$
$x_1 \leq 2$
$x_1 + x_2 \leq 3$
$x_1, x_2 \geq0$

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Question:

Rewrite the following linear programming problem in Standard form:
Minimise $Z = 2x_1 + x_2 + 4x_3$
Subject to the Constraints:
$-2x_1 + 4x_2 \leq 4$
$x_1 +2x_2 + x_3 \geq 5$
$2x_1 + 3x_3 \leq 2$
$x_1 \geq 0, x_2 \geq 0, x_3 \geq 0$

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Question:

State whether the following statements are True or False and also give the reason in support of your answer.
a) The Set $ ={(x, y) : 0 ≤ y ≤ 5 when 0 ≤ x≤ 2 and 3≤ y≤ 5 when 2≤ x ≤ 7 } is not a convex set.
b) If 10 is added to each of the entries of the cost matrix of a 3 x 3 assignment problem, then the total cost of an optimal assignment for the changed cost matrix will increase by 10.
c) The solution to a transportation problem with m-rows (supplies) and n-columns
(destinations) is feasible if number of positive allocations is m + n.
d) The Value d_i≥ 3 indicates an outlying observation in regression analysis.
e) Variations which occur due to natural forces and operate in a regular and periodic manner over a span of less than or equal to one year are termed as cyclic variations.

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Question:

The failure data of 10 electronic components are shown in the table given below:

Failure Number			1	2	3	4	5		6	7		8	9	10
Operating Time (in hours)			3	5	31	51	76		116	140		182	250	302

Estimate, the
i) reliability.
ii) cumulative failure distribution.
iii) failure density.
iv) failure rate functions.

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Question:

A small electronic device is designed to emit a timing signal of 200 milliseconds (ms) duration. In the production of this device, 10 subgroups of four units are taken at periodic intervals and tested. The results are shown in the following table:

Subgroup Number	Duration of Automatic Signal (in ms)
	a	b	c	d
1	195	201	194	201
2	204	190	199	195
3	195	197	205	201
4	211	198	193	180
5	204	193	197	200
6	200	202	195	200
7	196	198	197	196
8	201	197	206	207
9	200	202	204	192
10	203	201	209	192

i) Estimate the process mean and standard deviation.

ii) Determine the centre line and control limits for the process mean and process variability.

iii) By plotting the charts on graph paper, determine that the process is stable or not with respect to the process mean and process variability. If necessary, compute revised control limits

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