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Question 81

RRB JE 2026• Technical Abilities

Which of the following statements is TRUE about data transmission modes?

  1. AOption (a)

    Parallel transmission can transmit multiple bits simultaneously

  2. BOption (b)

    Serial transmission always requires more communication lines

  3. COption (c)

    Parallel transmission sends one bit at a time

  4. DOption (d)

    Serial transmission sends multiple bits simultaneously

View answer & explanation

Correct answer

Answer: (a)A.

Parallel transmission can transmit multiple bits simultaneously

Explanation not yet available.

Question 82

RRB JE 2026• Technical Abilities

Assume an SCR is operating in the forward blocking state. Once a sufficient positive current pulse is applied to the gate terminal, the SCR triggers into the conduction state. What happens if the gate signal is completely removed immediately after conduction starts?

  1. AOption (a)

    The SCR will immediately turn off.

  2. BOption (b)

    The SCR will begin to oscillate between the ON and OFF states.

  3. COption (c)

    The SCR will continue to conduct until the anode current drops below the holding current.

  4. DOption (d)

    The anode current will drop by exactly 50%.

View answer & explanation

Correct answer

Answer: (a)A.

The SCR will immediately turn off.

Explanation not yet available.

Question 83

RRB JE 2026• Technical Abilities

What is the output of the given C language code snippet?#includevoid f(int n){ if(n==0) return; printf("%d ",n); f(n-1);}int main(){ f(3); return 0;}

  1. AOption (a)

    1 2 3

  2. BOption (b)

    3 2 1 0

  3. COption (c)

    3 2 1

  4. DOption (d)

    Infinite loop

View answer & explanation

Correct answer

Answer: (a)A.

1 2 3

Explanation not yet available.

Question 84

RRB JE 2026• Technical Abilities

In the 8085 microprocessor, what will be the value of the Program Counter after execution of the instruction RST 3?

  1. AOption (a)

    0024H

  2. BOption (b)

    0003H

  3. COption (c)

    0018H

  4. DOption (d)

    0030H

View answer & explanation

Correct answer

Answer: (a)A.

0024H

Explanation not yet available.

Question 85

RRB JE 2026• Technical Abilities

A constant negative DC voltage is applied to the input of an inverting integrator. Assuming the op-amp starts at zero volts and remains unsaturated, the output will be:

  1. AOption (a)

    A negative-going linear ramp

  2. BOption (b)

    A square wave

  3. COption (c)

    A constant DC voltage

  4. DOption (d)

    A positive-going linear ramp

View answer & explanation

Correct answer

Answer: (a)A.

A negative-going linear ramp

Explanation not yet available.

Question 86

RRB JE 2026• Technical Abilities

A user wants to transmit uncompressed digital audio and video between a computer and a display using a single cable. Which connector type is most appropriate?

  1. AOption (a)

    F connector

  2. BOption (b)

    BNC connector

  3. COption (c)

    RCA connector

  4. DOption (d)

    HDMI connector

View answer & explanation

Correct answer

Answer: (a)A.

F connector

Explanation not yet available.

Question 87

RRB JE 2026• Technical Abilities

Which shape is used to represent a decision in a flowchart?

  1. AOption (a)

    Parallelogram

  2. BOption (b)

    Rectangle

  3. COption (c)

    Oval

  4. DOption (d)

    Diamond

View answer & explanation

Correct answer

Answer: (a)A.

Parallelogram

Explanation not yet available.

Question 88

RRB JE 2026• Technical Abilities

Why should electrical connections be regularly tightened in high-current circuits?

  1. AOption (a)

    Tight connections ensure lower circuit voltage

  2. BOption (b)

    It avoids electromagnetic interference

  3. COption (c)

    It prevents accidental current reversal

  4. DOption (d)

    Loose connections cause localized heating and fire risk

View answer & explanation

Correct answer

Answer: (a)A.

Tight connections ensure lower circuit voltage

Explanation not yet available.

Question 89

RRB JE 2026• Technical Abilities

In the 8085 microprocessor, if SP = 3FFFH and memory contains:

3FFEH = 20H

3FFFH = 20H

4000H = 10H

4001H =10H

After executing POP H, what will be the contents of HL?

  1. AOption (a)

    1020H

  2. BOption (b)

    2020H

  3. COption (c)

    1010H

  4. DOption (d)

    2010H

View answer & explanation

Correct answer

Answer: (a)A.

1020H

Explanation not yet available.

Question 90

RRB JE 2026• Technical Abilities

In 8051, consider the following instructions:

MOV PSW, #18H

MOV R3, #55H

MOV A, R3

From which register bank is R3 selected in the instruction MOV A, R3?

  1. AOption (a)

    Bank 1

  2. BOption (b)

    Bank 3

  3. COption (c)

    Bank 2

  4. DOption (d)

    Bank 0

View answer & explanation

Correct answer

Answer: (a)A.

Bank 1

Explanation not yet available.