NumPy MCQ
1 .
Which of the following returns an array of ones with the same shape and type as a given array?

Correct Answer : Option (B) :   ones_like

Explanation : The optional output arguments of the function can be used to help you save memory for large calculations.

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2 .
Point out the correct statement in NumPy.

Correct Answer : Option (D) :   All of the mentioned

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3 .
Which of the following method creates a new array object that looks at the same data?

Correct Answer : Option (C) :   view

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4 .
Which of the following function take only single value as input?

Correct Answer : Option (C) :   iscomplex

Explanation : iscomplex function returns a bool array, where true if input element is complex.

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5 .
Which of the following set the floating-point error callback function or log object?

Correct Answer : Option (A) :   settercall

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6 .
______ decompose the elements of x into mantissa and twos exponent.

Correct Answer : Option (B) :   frexp

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7 .
What will be output for the following code?
 
import numpy as np 
a = np.array([1, 2, 3], dtype = complex) 
print a

Correct Answer : Option (D) :   [ 1.+0.j, 2.+0.j, 3.+0.j]

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8 .
If a dimension is given as ____ in a reshaping operation, the other dimensions are automatically calculated.

Correct Answer : Option (D) :   Negative one

Explanation : If a dimension is given as -1 in a reshaping operation, the other dimensions are automatically calculated.

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9 .
What is the syntax for dtype object in NumPy?

Correct Answer : Option (C) :   numpy.dtype(object, align, copy)

Explanation : A dtype object is constructed using the following syntax : numpy.dtype(object, align, copy)

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10 .
Which of the following statement is true in NumPy?

Correct Answer : Option (A) :   The array object returned by __array_prepare__ is passed to the ufunc for computation.

Explanation : The array object returned by __array_prepare__ is passed to the ufunc for computation is true

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