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WorksheetsMock Aptitude and Technical Test - 30/07/2020
Total questions: 40
Worksheet time: 40mins
A steel wire AB is stretched between rigid supports (see figure). The initial prestress in the wire is 42 MPa when the temperature is 20°C. What is the stress in the wire when the temperature drops to 0°C? Assume, E = 200 GPa ; α = 14x10-6/oC
78 MPa
88 MPa
98 MPa
108 MPa
A bar AB having length L, Young’s modulus E, and Area A, is fixed at end A (see figure). At the other end a small gap of dimension s exists between the end of the bar and a rigid surface. A load P acts on the bar at point C, which is two-thirds of the length from the fixed end, and it makes the bar to come in contact with the right side support. If the support reactions produced by the load P are to be equal in magnitude, what should be the size ‘s’ of the gap?
PL/6EA
PL/4EA
PL/2EA
PL/EA
A seesaw weighing 10 kg/m of length is occupied by two children, each weighing 40 kg (see figure). The centerof gravity of each child is 2 metres from the fulcrum. The board is 3m long on either side of the fulcrum, 100mm wide, and 60mm thick. What is the maximum bending stress in the board?
1x105 N/m2
2x105 N/m2
3x105 N/m2
4x105 N/m2
A work material is machined using a tool material at a speed of 60m/min. It was estimated that the value of n for the tool material was 1 and the tool life was found out to be 80 min. If the life is increased to 100 min, what will be the speed for the same tool material and work piece?
60 m/min
55 m/min
48 m/min
40 m/min
A mechanical wearing action caused by hard particles in the work material gouging and removing small portions of the tool is called ______.
Diffusion
Abrasion
Plastic deformation
Adhesion
Find out the time required to drill a through hole of diameter 20 mm having a feed rate of 200mm/min. The thickness of the work material is 30mm. (value of tan 31 =0.6)
0.55 min
1.54 min
0.87 min
0.18 min
___________ is designed to reduce the pouring velocity of the liquid metal which enters into ___________ to minimize erosion
Sprue, runner
Pouring basin, sprue
Pouring basin, runner
Sprue, sprue base
Which type of casting used in application of gas turbine blades and dentures?
Centrifugal casting
Investment casting
Die casting
Slush casting
Volume of liquid material between two work pieces
Weld bead
Weld puddle
Root gap
Throat
Which of the following is not a solid state process in welding?
Explosive
Ultrasonic
Diffusion
Thermit
A Balloon containing an ideal gas is initially kept in an evacuated and insulated room. The balloon ruptures and the gas fills the entire room. Which one of the following statement is true at the end of the process?
The internal energy of the gas decreases, but enthalpy remains constant
The enthalpy of the gas decreases, but internal energy remains constant
Both internal energy and enthalpy remains constant
Both internal energy and enthalpy increases
The slopes of constant volume process in T-s diagram is
T/Cp
T/Cv
V/Cp
V/Cv
With increasing temperature of intake air, Otto cycle efficiency
Decreases
Increases
Remains same
Depends on other factors
The natural variability of the process is measured by ____________
Process mean
Sample standard deviation
Process standard deviation
Sample mean
Which machine is the better option
Machine1: Cpk=0.33
Machine2: Cpl=1.7 Cpu=0.66
Machine3: Cpl=1.33 Cpu=1.67
Machine4: Cpl=0.63 Cpu=1.67
Find the mode of the following
8,14,6,78,15,8,49,6,8,6,4,8,17,4,8,12
6
8
4
78
A chief cook of a restaurant chain wants to find the variance of the critical path in the process of sandwich making. The process consists of five activities. The predecessor- successor (P-S) relationships between the nodes and time estimates of the activities are given in the table.
Help him find the variance of the critical path (in sec rounded off to two decimal places)
3.81
2.00
4.21
4.50
Assume that you are the manager of Brittania biscuits and you have a production target of 50,000 units per year. You need to select a location to start a new factory. The details of the location are given in the table.
The optimum location for the plant is
Allahabad
Simla
Pune
Coimbatore
The processing times on a single machine for 3 jobs are given in the table. All the jobs are available at time t = 0.
The mean flow time (in min) as per shortest processing time sequence is_____.
6
13
15
12
The average age of 3 people is 46 years. When another man joins the group, the average reduces to 42 years. Now, another woman with age 4 years more than the new man replaces one of the 1st three people. The average age of these 4 is then 40 years. What is the age of the replaced person?
22
42
34
40
A train has a journey of 320 km to run. After going 1/5th of the distance, the engine breaks down and it can only run the remaining part of the journey at 3/4th of the original speed. If it arrives 2 hrs 40 min late, what is its original speed?
24 km/h
32 km/h
48 km/h
64 km/h
A man reaches his office late by 5 min when he travels at the speed of 8 km/hr. However, when he increases his speed to 12 km/hr, he reaches 5 min early. What is the distance that he travels?
4 km
6 km
10 km
None of the above
A publisher sells books to a retail dealer at Rs. 5 a copy but allows 25 copies to count as 24. If the retailer sells each of the 25 copies at Rs. 6, the profit percent made by him is :
25%
20%
30%
None of the above
Two pipes can ll a tank in 24 and 18 minutes respectively and a waste pipe can empty the tank in some time. All three pipes working together can ll the tank in 12 minutes. How much time is taken by the waste pipe to empty the full tank?
54
72
68
56
From the top of a tower 75m high, the angles of depression of the top and bottom of a pole standing on the same plane as the tower are observed to be 30° and 45° respectively. Find the height of the pole
30.5 m
35.9 m
28.6 m
31.7 m
If 5 men can paint a room 50 m long, 6 m high and 13 m wide working 10 hours per day in 6 days, then how many days of 9 hours each will 10 men need
m wide. (Assume all the walls and ceiling are painted leaving the floor)
3 days
4 days
2.78 days
2.6 days
Pointing to a lady on the platform Geetha said, “She is the sister of the father of my mother’s son”. What is the lady to Geetha?
Mother
Sister
Aunt
Niece
On what date of July, 1776 did Sunday fall?
8th
7th
12th
13th
If BOMBAY is written as MYMYMY, how will TAMIL NADU be written in that code?
TLATLATLA
MNUMNUMNU
IATIATIAT
ALDALDALD
How many children are there in the class ?
(A) Numbers of boys and girls are in the respective ratio of 3 : 4.
(B) Number of girls is more than the number of boys by 18
if statement (A) alone is sufficient to solve the question, but statement (B) alone is not.
if statement (B) alone is sufficient to solve the question, but statement (A) alone is not.
if neither statement (A) nor statement (B) is individually sufficient to solve the question, but a combination of both is sufficient to solve the question.
if neither statement (A) nor statement (B) is individually suf cient to solve the question, but a combination of both is sufficient to solve the question.
if both the statements taken together are not sufficient and more information is required to solve the question.
Village A is 3 km south of village B. Village C is 4 km east of village B.How far and in which direction village C from village A?
5 m, north west
12 m, south east
5 m, north east
12 m ,north
Direction: In the following sentence,the main statement is followed by four sentences each. Select a pair of sentences that relate logically to the given statement.
Unless boss is present employees don't work
(i) Boss is present
(ii) Boss is not present
(iii) Employee work
(iv) Employee don't work
(i) and (iv)
(ii) and (iv)
(iv) and (i)
None of these
If * stands for 'addition', / stands for 'subtraction', + stands for 'multiplication', and - stands for 'division', then 20 * 8 / 8 - 4 + 2 = ?
12
24
28
30
Choose the option that most logically completes the idea as stated in each paragraph.
Millions of people suffer from diabetes and a good many of them don't even realize they have it. But this is no ordinary disease: It's an epidemic that breeds others. Blood sugar rampant - the hallmark of diabetes - damages vital organs. And it's getting worse. In the last ten years, the prevalence has increase sharply among younger people. Diabetes cases have exploded for one key reason: the increase in obesity over the past decade.
Physicians believe that as diabetes is a life style disease, poor people are less affected by it than rich people who hardly put in any physical activity.
Recent studies have shown that moderate weight loss and exercise can decrease the development of the most common form of diabetes by more than half in people at risk.
The possible indicator of obesity is the increasing sugar levels of the younger generation that is addicted to fast food fads and imbalances in living styles.
Research shows that the ill effects of obesity caused by diabetes can be controlled if youngsters are counselled for prevention of obesity by checking the intake of sugar in diets.
Select most suitable synonym
saturnine
asinine
sombre
imbecilic
ribald
Select the most suitable synonym
flippant
silly
audacious
revengeful
frivolous
Identify the one which is opposite in meaning (antonym) to the question word and mark.
profligate
reckless
cautious
careless
haughty
Pick out the word which is opposite in meaning to the given word.
SACROSANCT
irreligious
unethical
irreverent
unholy
Select the word from the given options that can t the blanks in all the sentences given in the questions.
A. My nose is choked, I need to ...... it.
B. He lifts weight after work to ...... off steam.
C. My father will ...... his top when he sees what happened to the car.
D. Her death at twenty came as a ...... to her parents.
blow
feed
rough
smash
Complete the following sentences with the right option
__________ learners learn best in hands-on learning settings in which they can physically manipulate something to learn.
Parse
Tactile
Feeble
Quick
