List of practice Questions

Resistance of a wire at \(0^\circ C\), \(100^\circ C\) and \(t^\circ C\) is found to be \(10 \, \Omega\), \(10.2 \, \Omega\) and \(10.95 \, \Omega\) respectively. The temperature \(t\) in Kelvin scale is ______.
The ratio of heat dissipated per second through the resistance 5 ohm and 10 ohm in the circuit given below is :
Circuit diagram
A wire of resistance R and radius r is stretched till its radius became r/2. If new resistance of the stretched wire is x R, then value of x is _________.
In an ammeter, 5% of the main current passes through the galvanometer. If resistance of the galvanometer is G, the resistance of ammeter will be :
“The Silk route was a good example of vibrant pre-modern trade and cultural links between distant parts of the world.” Explain the statement with any two examples.
Valli was sensitive, but at the same time, she was fearless and quite determined. Think of another character from your textbook, who displayed similar character traits.
Compare and contrast the lives of Valli and the other character, that you have chosen from the text of Two Stories about Flying.
You may begin this way.
The characters who are fearless and determined from two texts are Valli and __________.
(Reference: Madam Rides a Bus & Two Stories about Flying)
In an image with 6-bit quantization level, the pixel values of a scene are between 25 and 55. A linear contrast stretch is applied to the image covering the full dynamic range. A pixel value 40 in the original image will be mapped to ________ (rounded off to nearest integer) in the stretched image.
In spatial interpolation using coordinate transformations for image-to-map rectification, the minimum number of ground control points (GCPs) required to perform a third-order transformation is _________ (in integer).
A four-band multispectral image with pixel size of 50 m x 50 m covers a ground area of 20 km × 20 km. If the radiometric resolution of the satellite data is 8 bits, then the uncompressed satellite image contains _______ kilobytes (kB) of data (in integer).
Using the given 3 × 3 pixel kernel and original image and applying the concept of convolution, the value of central pixel of the output image is _____ (in integer).
Using the given 3 × 3 pixel kernel and original image and applying the concept of convolution, the value of central pixel of the output image is _____ (in integer).
Which of the following statistical classification algorithms is/are represented by the figure given below?
Which of the following statistical classification algorithms is/are represented by the figure given below?
Which of the following statements about image ratio is/are CORRECT?
Which of the following filters can be used to suppress the low frequency component of a raster image?
Which of the following filters can be used to suppress the low frequency component of a raster image?
In the context of satellite image classification, which of the following statements is/are CORRECT?
Which of the following statements about Principal Component Analysis (PCA) is/are CORRECT?
Which of the following statistical measures CANNOT be computed from the multispectral image histograms?
For the following covariance matrix (Σ) of a multispectral image, which of the statements is/are INCORRECT?
For the following covariance matrix (Σ) of a multispectral image, which of the statements is/are INCORRECT?
The figure given below shows the Fourier spectrum obtained by applying filter on a remote sensing image in frequency domain. Zone A represents the location of ________ components.
The figure given below shows the Fourier spectrum obtained by applying filter on a remote sensing image in frequency domain
De-stripping in radiometric correction is used to correct a type of
_______ is a raster image resampling technique that DOES NOT alter any of the output cell values from the input raster dataset.
Contrast enhancement is a type of _______ enhancement.
Which type of contrast stretching is represented by the following figure?
Which type of contrast stretching is represented by the following figure?
The histogram equalization applied to a digital image generally DOES NOT yield a truly uniform histogram of the transformed image due to
A one-dimensional normalized kernel $\frac{1}4 [1 \, \,2 \,\,1]$ is convolved with an image to produce an intermediate result. The intermediate image of this operation is again convolved with the same kernel to produce a final result. The equivalent kernel to achieve the same final result in one step from the original image is given as
A four-band multispectral image of size 64 × 64 pixels has 560 header bytes. The per pixel depth of the image is 2 bytes. The total number of bytes required to store this image on the disk in the Band Interleaved by Line (BIL) format will be