RRB JE 2018 CBT 2 Electrical Engineering Question Paper (01-Sep-2019) (Shift 2)

Question 1

What is the difference between a 7400 and a 7411 IC?

Accepted Answer

7400 has four two-input NAND gates; 7411 has three three-input AND gates

Answer

7400 has four two-input AND gates; 7411 has three three-input NAND gates

Answer

7400 has two four-input NAND gates; 7411 has three three-input AND gates

Answer

7400 has two four-input AND gates; 7411 has three three-input NAND gates

Question 2

Noise factor of a system is defined as:

Accepted Answer

Ratio of input S/N ratio to output S/N ratio

Answer

Ratio of input signal to output signal

Answer

Ratio of output S/N ratio to input S/N ratio

Answer

Ratio of output signal to noise ratio

Question 3

In Smart India Hackathon 2019, students of __________ came out with a Solution to Detect Fake Notes.

Accepted Answer

IIT - Kharagpur

Answer

IIT - Chennai

Answer

IIT - Delhi

Answer

IIT - Mumbai

Question 4

The number of distinct Boolean expressions of four variables is-

Accepted Answer

65536

Answer

16

Answer

1024

Answer

256

Question 5

Tundra ecosystem is an example of-

Accepted Answer

No tree region

Answer

Micro biological

Answer

All of the options

Answer

Marine