Junior Engineer • Paper-I
In drilling operation, the metal is removed by
A)
shearing and compression
B)
shearing
C)
extrusion
D)
shearing and extrusion
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'extrusion' (Option C).
Junior Engineer • Paper-I
In arc welding, the electric arc is produced between the work and the electrode by -
A)
voltage
B)
flow of current
C)
contact resistance
D)
all of these
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'all of these' (Option D).
Junior Engineer • Paper-I
Cutting work of iron and steel with the aid of oxygen which is extensively used nowadays in industry is
A)
Electric cutting
B)
Arc cutting
C)
Oxygen cutting
D)
None of these
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'None of these' (Option D).
Junior Engineer • Paper-I
The method of measuring and/or checking the quality of a product in terms of specified standard
A)
Manufacturing
B)
Inspection
C)
Material handling
D)
None of these
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'None of these' (Option D).
Junior Engineer • Paper-I
For static balancing of a shaft, the net dynamic force acting on the shaft is equal to zero
A)
Agree
B)
Disagree
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'nan' (Option D).
Junior Engineer • Paper-I
In die casting, machine allowance is
A)
not provided
B)
small
C)
large
D)
very large
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'not provided' (Option A).
Junior Engineer • Paper-I
Product layout is used for
A)
job production
B)
batch production
C)
mass production
D)
all of these
Product layout (also called line layout) arranges machines and workstations in the sequence of operations for a standardized product. This is most suitable for mass production, where the same item is produced in large quantities with a fixed flow of work. Option c is therefore correct.
Why the others are incorrect: job production (a) uses process/fixed-position type arrangements because each job is unique; batch production (b) is usually better suited to process or cellular layouts since products are made in groups with changeovers; all of these (d) is wrong because product layout is not generally used for job or batch production.
Junior Engineer • Paper-I
Which of the following material can be used for making patterns ?
A)
Alluminium
B)
Wax
C)
Lead
D)
All of these
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'All of these' (Option D).
Junior Engineer • Paper-I
Which is not the typical forging operations
A)
bending
B)
balancing
C)
welding
D)
cutting
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'cutting' (Option D).
Junior Engineer • Paper-I
A production lathe which is used to manufacture any number of identical pieces in the minimum time is
A)
Engine lathe
B)
A capstan and turret lathe
C)
Speed lathe
D)
None of the above
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'A capstan and turret lathe' (Option B).
Junior Engineer • Paper-I
The most important functions of inventory (Stock) control are
A)
to have good stock control system
B)
to have technical responsibility for the state of materials
C)
to run the stores effectively
D)
all of these
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'all of these' (Option D).
Junior Engineer • Paper-I
Actual performance of a task is called
A)
an event
B)
an activity
C)
a duration
D)
none of these
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'a duration' (Option C).
Junior Engineer • Paper-I
Which is not precision grinder
A)
cylinder grinder
B)
surface grinder
C)
internal grinder
D)
abrasive belt grinder
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'internal grinder' (Option C).
Junior Engineer • Paper-I
The purpose of a gate is to
A)
act as the reservoir for the molten metal
B)
deliver molten metal into the mould cavity
C)
deliver molten metal from pouring basin to gate
D)
feed the molten metal to the casting in order to compensate for the shrinkage
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'feed the molten metal to the casting in order to compensate for the shrinkage' (Option D).
Junior Engineer • Paper-I
A shaft is a rotating machine element
A)
Correct
B)
Incorrect
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'Incorrect' (Option B).
Junior Engineer • Paper-I
A pressure vessel is said to be a thin shell when the ratio of wall thickness of the vessel to its diameter is ......................... 1/10
A)
equal to
B)
less than
C)
greater than
A pressure vessel is classified as a thin shell when its wall thickness is small compared with its diameter, typically when t/d < 1/10. Therefore, the thickness-to-diameter ratio must be less than 1/10, so option (b) is correct. Option (a) is incorrect because equal to 1/10 is the limiting value, not the thin-shell condition itself. Option (c) is incorrect because a ratio greater than 1/10 indicates a thick shell, not a thin shell.
Junior Engineer • Paper-I
What is not basic area of inspection
A)
Receiving Inspection
B)
Final Inspection
C)
Inprocess Inspection
D)
Production
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'Receiving Inspection' (Option A).
Junior Engineer • Paper-I
The oxy-acetylene gas used in gas welding produce a flame temperature of
A)
1800ºC
B)
2100ºC
C)
2400ºC
D)
3200ºC
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is '1800ºC' (Option A).
Junior Engineer • Paper-I
For arc welding
A)
alternating current with high frequency is used
B)
direct current is used
C)
alternating current with low frequency is used
D)
all of these
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'all of these' (Option D).
Junior Engineer • Paper-I
In a belt drive, if the pulley diameter is doubled keeping the tension and belt width constant, then it will be necessary to -
A)
increase the key length
B)
decrease the key length
C)
increase the key width
D)
increase the key depth
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'increase the key width' (Option C).
Junior Engineer • General English
Identify the correct usage of the word to fill in the blank: 'The Police _____________ 3 Kilograms of contraband'
A)
cease
B)
seized
C)
ceased
D)
deceased
The correct word is **"seized"**: "The Police seized 3 kilograms of contraband" means the police took possession of the illegal goods.
Why others are wrong:
- **cease** = to stop; it does not fit the meaning or grammar here.
- **ceased** = past tense of cease; also means stopped, not took possession.
- **deceased** = dead; completely unrelated to the sentence.
So, **b) seized** is the correct answer.
Junior Engineer • General English
Choose the correct meaning of the idiom: 'At sea' as used in 'The question asked by his teacher put him At sea'
A)
baffled
B)
very happy
C)
very excited
D)
very sad
"At sea" means confused, puzzled, or baffled. In the sentence, the teacher’s question left him unable to understand or respond properly, so "baffled" is the correct meaning. The other options are incorrect because "very sad," "very excited," and "very happy" do not match the idiomatic sense of being confused or at a loss.
Junior Engineer • General English
Identify the correct preposition to fill in the blank: 'When we get ready for dinner, I have to take my books__________ the table.'
A)
Off
B)
From
C)
Out
D)
Of
The correct phrase is "take my books off the table." Here, "off" means away from the surface of the table, which fits the context of clearing the table for dinner. "From" is less natural here because we usually say "off the table" when removing something from a surface. "Out" does not fit because it suggests movement from inside something. "Of" is grammatically incorrect in this context.
Junior Engineer • General English
Identify the appropriate verb-form to fill in the blank: 'I think Arabic _________ a complicated language.'
A)
are
B)
am
C)
is
D)
was
The correct verb is "is" because "Arabic" is a singular noun referring to one language. So the sentence should read: "I think Arabic is a complicated language."
Why the others are wrong:
- "are" is used with plural subjects, not singular nouns like "Arabic".
- "am" is used only with the first-person singular subject "I".
- "was" is past tense, but the sentence expresses a general present opinion, so present tense "is" is needed.
Junior Engineer • General English
Based on the passage, a major cause for poverty is:
A)
overpopulation
B)
laziness
C)
illiteracy
D)
religion
The passage identifies overpopulation as a major cause of poverty.
