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Question 141

RRB JE 2026• Technical Abilities

Which instruction is used to return from a subroutine in 8085?

  1. AOption (a)

    RET

  2. BOption (b)

    JMP

  3. COption (c)

    RST

  4. DOption (d)

    CALL

View answer & explanation

Correct answer

Answer: (a)A.

RET

Explanation not yet available.

Question 142

RRB JE 2026• Technical Abilities

During insulation testing of a long underground cable, a technician observes higher leakage current compared to a shorter cable of the same type. What is the most likely reason?

  1. AOption (a)

    Leakage current is independent of cable length for the same insulation material.

  2. BOption (b)

    A longer cable always has higher insulation resistance than a shorter cable.

  3. COption (c)

    The increased cable length reduces the dielectric strength of the insulation.

  4. DOption (d)

    The larger insulation surface area provides more leakage paths to ground.

View answer & explanation

Correct answer

Answer: (a)A.

Leakage current is independent of cable length for the same insulation material.

Explanation not yet available.

Question 143

RRB JE 2026• Technical Abilities

Which statement is TRUE about if statement in the C programming language?

  1. AOption (a)

    if statement cannot be nested

  2. BOption (b)

    Every if statement must have a matching else

  3. COption (c)

    A non-zero value written in the condition means True

  4. DOption (d)

    A value of 0 written in the condition means True

View answer & explanation

Correct answer

Answer: (a)A.

if statement cannot be nested

Explanation not yet available.

Question 144

RRB JE 2026• Technical Abilities

Which of the following contains only valid octal digits?

  1. AOption (a)

    3, 5, 7, 9

  2. BOption (b)

    2, 4, 6, 9

  3. COption (c)

    0, 3, 5, 7

  4. DOption (d)

    1, 5, 7, 8

View answer & explanation

Correct answer

Answer: (a)A.

3, 5, 7, 9

Explanation not yet available.

Question 145

RRB JE 2026• Technical Abilities

At room temperature, the region in a PN junction diode where there are no mobile electrons or holes is called __________________.

  1. AOption (a)

    Depletion region

  2. BOption (b)

    P-type region

  3. COption (c)

    N-type region

  4. DOption (d)

    Ohmic terminal interface

View answer & explanation

Correct answer

Answer: (a)A.

Depletion region

Explanation not yet available.

Question 146

RRB JE 2026• Technical Abilities

The output of the phase detector in a phase-locked loop is ____________.

  1. AOption (a)

    Zero when the phase detector finds the input and oscillator phases are perfectly aligned.

  2. BOption (b)

    An alternating current signal when the phase detector locks the loop.

  3. COption (c)

    A maximum constant voltage when the phase detector is in a free-running state.

  4. DOption (d)

    A proportional error voltage when the phase detector identifies a phase difference between input and the VCO signal

View answer & explanation

Correct answer

Answer: (a)A.

Zero when the phase detector finds the input and oscillator phases are perfectly aligned.

Explanation not yet available.

Question 147

RRB JE 2026• Technical Abilities

Under forward-bias conditions, what is the primary mechanism that creates forward current across a PN junction?

  1. AOption (a)

    The millions of protons creation inside the depletion region

  2. BOption (b)

    The drift of majority carriers due to the enhanced internal barrier electric field.

  3. COption (c)

    The freezing of movement for free electrons across the metallurgical junction.

  4. DOption (d)

    Majority carriers crossing the junction to become injected minority carriers that diffuse through the neutral regions

View answer & explanation

Correct answer

Answer: (a)A.

The millions of protons creation inside the depletion region

Explanation not yet available.

Question 148

RRB JE 2026• Technical Abilities

Which protocol is responsible for delivering web pages over the Internet?

  1. AOption (a)

    FTP

  2. BOption (b)

    SMTP

  3. COption (c)

    HTTP

  4. DOption (d)

    ARP

View answer & explanation

Correct answer

Answer: (a)A.

FTP

Explanation not yet available.

Question 149

RRB JE 2026• Technical Abilities

In a CRO time-base circuit, why is constant-current charging preferred for generating the sweep voltage?

  1. AOption (a)

    It relies on the transistor's collector current to set the linearity

  2. BOption (b)

    It makes the retrace interval longer than the sweep interval

  3. COption (c)

    It causes the capacitor voltage to rise exponentially with time, distorting the sweep

  4. DOption (d)

    It ensures the capacitor voltage rises uniformly over time, forming a linear sweep

View answer & explanation

Correct answer

Answer: (a)A.

It relies on the transistor's collector current to set the linearity

Explanation not yet available.

Question 150

RRB JE 2026• Technical Abilities

A coil is placed in a uniform magnetic field. If the area of the coil is doubled while the magnetic field strength and orientation remain unchanged, how will the magnetic flux through the coil be affected assuming the initial magnetic flux is a non-zero finite value?

  1. AOption (a)

    The magnetic flux will double

  2. BOption (b)

    The magnetic flux will become four times

  3. COption (c)

    The magnetic flux will decrease to half

  4. DOption (d)

    The magnetic flux will remain the same

View answer & explanation

Correct answer

Answer: (a)A.

The magnetic flux will double

Explanation not yet available.
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