महाराष्ट्र अभियंता सेवा पूर्व परीक्षा २०१७ Questions And Answers:
The iron loss in a 10 KVA transformer is 1 kW and the full load copper losses are 2 kW. The maximum efficiency occurs at a load of
The power in a three-phase circuit is measured by the two-wattmeter method. The reading indicated on the two wattmeters are W1 and W2. The total power in the circuit is not given by
The equation for 25 cycles per second current sine wave having RMS value of 30 Ampere, will be
How is the form factor for sinusoidal alternating quantities with Im as the peak value expressed?
The area enclosed between the straight line y = x and the parabola y = x2 in the x-y plane is
The quadratic approximation of f(x) = x3 - 3x2 – 5 at the point x = 0 is
A cubic polynomial with real coefficients
As x varies from -1 to 3, which one of the following describes the behaviour of the function f(x) = x3 – 3x2 + 1 ?
If z = eax + by f (ax – by), then b equals to
Let A be an n xn matrix with rank r (0 < r < n). Then AX = 0 has p independent solutions, where p is
How is the crest factor of alternating quantities expressed ?
The value of passing through the straight line joining (0, 0, 0) and (2, 1, 3) is
Expansion of (1 + x)1/x up to the term containing x2 is given as
The minimum value of
Find for what value of k, the set of equations equations
2x – 3y + 62 -- 5t = 3
y - 4z + t = 1
4x - 5y + 8z - 9t = k
has an infinite number of solutions for equal to
If x = eu tan v, y = eu sec v, then the value of
Cauchy's homogeneous linear differential form is given as
sin (log x), then the particular integral will be
For (D2 +4D+3)Y= 3e2x,the particular integral is
dx is equal to
The volume of the region enclosed by the cone z = and paraboloid
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