ISRO Scientist/Engineer EE Solved Papers

A single-phase, half-bridge inverter has an input voltage of 48 V DC. Inverter is feeding a load of 2.42. The r.m.s. output voltage at fundamental frequency is,

Which one of the following statements express the thermal resistance between the body of a power-semiconductor device and the ambient?

A DC-DC boost converter, as shown in the figure below, is used to boost 360 V to 400V at a power of 4 kW. All devices are ideal. Considering continuous inductor current, the rms current in the solid state switch (Q), is

A MOSFET rated for 15 A, carries a periodic current as shown in figure. The ON state resistance of the MOSFET is 0.15 Ω. The average ON state loss in the MOSFET is

If A and B are two square matrices such that $B=-A^{-1}BA$, then $(A+B)^2$ is:

Which option replaces the question mark?

Find the replica image to the first

Which option replaces the question mark?

The average life expectancy for the entire United States (US) population is 73.9 years, born in Hawaii will live an average of 77 years, and those born in Louisiana, 71.7 years. If a newlywed couple from Louisiana were to begin their family in Hawaii, therefore, their children would be expected to live longer than would be the case if the family remained in Louisiana.
Which of the following, if true, would most seriously weaken the conclusion drawn in the passage?

Choose one of the following options that means the opposite of the given word:
AWARE

Six people P, Q, R, S, T and U are sitting on the ground in a hexagonal shape.
1. All the sides of the hexagon, so formed are of same length.
2. P is not adjacent to Q or R.
3. S is not adjacent to R or T.
4. Q and R are adjacent.
5. U is in the middle of S and R.
Who is at the same distance from S as T is from S?

Which one will replace the question mark?

Which one will replace the question mark in the circle with sectors containing 1, 8, 27, ?

Which one replaces the question mark?

Fact 1: Islands are surrounded by water.
Fact 2: Maui is an island.
Fact 3: Maui was formed by a volcano.
If the first three statements are facts, which of the following statements must also be a fact?
I: Maui is surrounded by water.
II: All islands are formed by volcanoes.
III: All volcanoes are on islands.

The theory of relativity, developed by Albert Einstein, revolutionized the field of physics. It challenged the traditional Newtonian concepts of time, space, and gravity. Einstein's theory proposed that time and space are not absolute but are interconnected dimensions that form a four-dimensional fabric called space time. It also introduced the concept of gravity as the curvature of space time caused by the presence of mass and energy.
What was the impact of Albert Einstein's theory of relativity?

B2CD,  _____,  BCD4,  B5CD,  BC6D

Study the table carefully and answer the question given below
Projected and Actual Production of Cars of 5 Different companies (Numbers in '000)

(P = Projected; A = Actual)
Which company has the highest actual production of cars over these years?

Study the table carefully and answer the questions given below
Loans disbursed by five banks over the years (in crores of rupees)

In which bank was the disbursement of loans more than 25 percent of all banks in 1986?

Find the point c in the curve $f(x)=x^3+x^2+x+1$ in the interval [0, 1] where slope of a tangent to a curve is equals to the slope of a line joining (0,1)