Engineering Mathematics [GATE (Graduate Aptitude Test in Engineering) Electrical Engineering (EE)]: Questions 36 - 40 of 249
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Question 36
Appeared in Year: 2018
Question Numeric Answer▾
Consider a non-singular square matrix A. If trace (A) = 4 and trace , the determinant of the matrix A is ________
EditQuestion 37
Appeared in Year: 2017
Question Numeric Answer▾
Consider a function f (x, y, z) given by
The partial derivative of this function with respect to x at the point, and is ________
EditQuestion 38
Appeared in Year: 2018
Question Numeric Answer▾
A three-phase, 900 kVA, 50 Hz transformer has primary (high voltage side) resistance per phase of and secondary (low voltage side) resistance per phase of . Iron loss of the transformer is 10 kW. The full load % efficiency of the transformer operated at unity power factor is ________ (upto 2 decimal places) .
EditQuestion 39
Appeared in Year: 2021
Question MCQ▾
Let (– 1 – j) , (3 – j) , (3 + j) and (– 1 + j) be the vertices of a rectangle C in the complex plane. Assuming that C is traversed in counter-clockwise direction, the value of the contour integral is:
Choices
Choice (4) | Response | |
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a. | ||
b. | ||
c. | 0 | |
d. |
Question 40
Appeared in Year: 2017
Question Numeric Answer▾
In a load flow problem solved by Newton-Raphson method with polar coordinates, the size of the Jacobian is . If there are 20 PV buses in addition to PQ buses and a slack bus, the total number of buses in the system is ________.
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