DSSC Signals and Engineers Academic Test Electrical Mechanical Telecom Civil Engineering Mock 1

By selling an article for Rs. 450, I lose 20%. For what price should I sell it to gain 20% ?

1 Mark(s)

Your Answer:

Rs. 470 Rs. 470
Rs. 562.50 Rs. 562.50
Rs. 490 Rs. 490
Rs. 675 Rs. 675

In Java event handling, which method is used to handle focus gained events?

1 Mark(s)

Your Answer:

`focusEvent()` `focusEvent()`
`onFocusGained()` `onFocusGained()`
`focusGained()` `focusGained()`
`handleFocus()` `handleFocus()`

If $x - 22 = 43$, find $x$

1 Mark(s)

Your Answer:

63 63
64 64
65 65
66 66

Which of the following statements about stdout and stderr are true?

1 Mark(s)

Your Answer:

Same Same
Both connected to screen always Both connected to screen always
Both connected to screen by default Both connected to screen by default
stdout is line buffered but stderr is unbuffered

Which of the following device is used for the 3D positioning of an object?

1 Mark(s)

Your Answer:

Trackball Trackball
Mouse Mouse
Spaceball Spaceball
All of the above All of the above

58978 / 363.94 * 11.02 = _______?

1 Mark(s)

Your Answer:

1580 1580
1680 1680
1780 1780
1880 1880

The wrapping of private data in classes in object-oriented programming languages is termed as:

1 Mark(s)

Your Answer:

data encapsulation data encapsulation
data declaration data declaration
data initialization data initialization
data deletion data deletion

The perimeter of a quadrant of a circle of radius 7 cm is

1 Mark(s)

Your Answer:

A) 18 cm A) 18 cm
B) 11 cm B) 11 cm
C) 22 cm C) 22 cm
D) 25 cm D) 25 cm

A vessel contains some mixture of Water and Alcohol in the ratio 2 ∶ 1. 12 liters of mixture is removed and replaced with water and the final ratio becomes 4: 1. What is the amount of Alcohol in the initial Mixture?

1 Mark(s)

Your Answer:

12 litres 12 litres
15 litres 15 litres
20 litres 20 litres
10 litres 10 litres
12.5 litres 12.5 litres

What will be the output of the following Java program? class A { int i; public void display() { System.out.println(i); } } class B extends A { int j; public void display() { System.out.println(j); } } class Dynamic_dispatch { public static void main(String args[]) { B obj2 = new B(); obj2.i = 1; obj2.j = 2; A r; r = obj2; r.display(); } }

1 Mark(s)

Your Answer:

1 1
2 2
3 3
4 4

Two linear equations are said to be equivalent if they have exactly the same:

1 Mark(s)

Your Answer:

inequality signs inequality signs
coefficient coefficient
solution solution
none of above none of above

Two trains 200 meters and 150 meters long are running on parallel rails in the same direction at speed of 40 km/hr and 45 km/hr respectively. Time taken by the faster train to cross the slowed train will be:

1 Mark(s)

Your Answer:

72 seconds 72 seconds
132 seconds 132 seconds
192 seconds 192 seconds
252 seconds 252 seconds

Where did early man live?

1 Mark(s)

Your Answer:

A) On trees and in caves A) On trees and in caves
B) In kuchcha houses B) In kuchcha houses
C) In pucca houses C) In pucca houses
D) In huts D) In huts

The average of all even numbers up to 100 is _____?

1 Mark(s)

Your Answer:

42 42
44 44
47 47
51 51

Which of the following functions from Z into Z are bijective?

1 Mark(s)

Your Answer:

A) f(x) = x 3 A) f(x) = x 3
B) f(x) = x + 2 B) f(x) = x + 2
C) f(x) = 2x + 1 C) f(x) = 2x + 1
D) f(x) = x 2 + 1 (x) = x + 2 D) f(x) = x 2 + 1 (x) = x + 2

The reciprocal of $\frac { -2 }{ 5 } $ is

1 Mark(s)

Your Answer:

A) $\frac { -5 }{ 2 } $ A) $\frac { -5 }{ 2 } $
B) $\frac { 5 }{ 2 } $ B) $\frac { 5 }{ 2 } $
C) $\frac { 2 }{ 5 } $ C) $\frac { 2 }{ 5 } $
D) $\frac { -2 }{ 5 } $ D) $\frac { -2 }{ 5 } $

Simplification

1 Mark(s)

Your Answer:

3/2 3/2
5/2 5/2
7/2 7/2
11/2 11/2

A and B start at the same time with speed of 40 km/hr and 50 km/hr respectively. If in covering the journey A takes 15 minutes longer than B, the total distance of the journey is :

1 Mark(s)

Your Answer:

50 km 50 km
52 km 52 km
46 km 46 km
48 km 48 km

B starts 4 minutes after A from the same point, for a place at a distance of 7 miles from the starting point. A on reaching the destination turns back and walks a mile where he meets B. If A's speed is a mile in 8 minutes then B's speed is a mile in ____ minutes.

1 Mark(s)

Your Answer:

10 10
8 8
9 9
12 12

In 2014, 200 workers received pays on hourly basis from $15/hour to $25/hour according to the difficulty of assigned tasks. The largest possible amount paid to the workers for 8 working hours is:

1 Mark(s)

Your Answer:

$215 $215
$165 $165
$200 $200
$170 $170

Study the following pie-diagrams carefully and answer the question given below it.PERCENTAGE COMPOSITION OF HUMAN BODY

1 Mark(s)

Your Answer:

$${1\over 40}$$ $${1\over 40}$$
$${3\over 80}$$ $${3\over 80}$$
$${2\over 5}$$ $${2\over 5}$$
None of these None of these

What are the coordinates of a point whose x-coordinate is 3 and y-coordinate is 4?

1 Mark(s)

Your Answer:

A) (3, 3) A) (3, 3)
B) (3, 4) B) (3, 4)
C) (4, 3) C) (4, 3)
D) (4, 3). D) (4, 3).

If Rs. 7500 are borrowed at C. I at the rate of 4 % per annum then after 2 years, the amount to be paid is_______?

1 Mark(s)

Your Answer:

Rs. 8082 Rs. 8082
Rs. 7800 Rs. 7800
Rs. 8100 Rs. 8100
Rs. 8112 Rs. 8112

In an economical model, physical object is:

1 Mark(s)

Your Answer:

economics economics
transport transport
probability probability
country country

In the following figure, the two triangles are congruent. The corresponding parts are marked. We can write ∆ RAT = ?

1 Mark(s)

Your Answer:

A) ∆ WON A) ∆ WON
B) ∆ WNO B) ∆ WNO
C) ∆ OWN C) ∆ OWN
D) ∆ ONW D) ∆ ONW

Solve the equation for x : 6x – 27 + 3x = 4 + 9 – x

1 Mark(s)

Your Answer:

4 4
5 5
6 6
-4 -4
None of these None of these

Which of the following sequences is not an AP?

1 Mark(s)

Your Answer:

A) 2, $\frac{5}{2}$, 3, $\frac{7}{2}$……….
B) -1.2, -3.2, -5.2, -7.2,……… B) -1.2, -3.2, -5.2, -7.2,………
C) √2, √8, √18, ………. C) √2, √8, √18, ……….
D) 1 2 , 3 2 , 5 2 , 7 2 , ……. D) 1 2 , 3 2 , 5 2 , 7 2 , …….

If the distance between the points (4, P) and (1, 0) is 5, then the value of P is

1 Mark(s)

Your Answer:

A) 4 only A) 4 only
B) ± 4 B) ± 4
C) -4 only C) -4 only
D) 0 D) 0

Find the LCM and HCF of 2.5, 0.5 and 0.175.

1 Mark(s)

Your Answer:

2.5 2.5
5 5
7.5 7.5
17.5 17.5

The domain of the definition of the real function f(x) = √(log 12 x² ) of the real variable x is

1 Mark(s)

Your Answer:

A) x > 0 A) x > 0
B) |x| ≥ 1 B) |x| ≥ 1
C) |x| > 4 C) |x| > 4
D) x ≥ 4 D) x ≥ 4

if 3 times a number exceeds its 3/5 by 60, then the number is.

1 Mark(s)

Your Answer:

25 25
35 35
45 45
60 60

On a certain sum of money, the simple interest for 2 years is ₹150 at the rate of 10% per annum. What is the difference between the compound interest and the simple interest for 2 years if, in the case of compound interest, interest is compounded annually at the rate of 10% per annum.

1 Mark(s)

Your Answer:

₹ 5 ₹ 5
₹ 10 ₹ 10
₹ 7.5 ₹ 7.5
₹ 12.5 ₹ 12.5

The ratio 5 : 4 expressed as a percent equals :

1 Mark(s)

Your Answer:

125 % 125 %
80 % 80 %
40 % 40 %
12.5 % 12.5 %

On multiplying a number by 7, the product is a number each of whose digits is 3. The smallest such number is:

1 Mark(s)

Your Answer:

47619 47619
47719 47719
48619 48619
47649 47649

Functions have ..........

1 Mark(s)

Your Answer:

Local scope Local scope
Block scope Block scope
File scope File scope
Function scope Function scope
No scope at all No scope at all

Additive inverse of 1/7 is?

1 Mark(s)

Your Answer:

-1/7 -1/7
1/7 1/7
1 1
None of these None of these

Mary bought a tank whose dimensions are 5.6cm, 8.2cm and 12.8 cm. The volume of water (in cm³) that can be stored in tank (correct up to four significant figures) is:

1 Mark(s)

Your Answer:

585.8 585.8
600.8 600.8
590.8 590.8
587.8 587.8

If ΔABC is an isosceles triangle with ∠C = 90° and AC = 5 cm then AB is:

1 Mark(s)

Your Answer:

5 cm 5 cm
10 cm 10 cm
5$$\sqrt 2 $$ cm 5$$\sqrt 2 $$ cm
2.5 cm 2.5 cm

The reflex angle between the hands of a clock at 10.25 is:

1 Mark(s)

Your Answer:

180° 180°
192 1 ° 2 192 1 ° 2
195° 195°
197 1 ° 2 197 1 ° 2

If x = 222, y = 223 and z = 224, then find the value of x3+y3+z3-3xyz

1 Mark(s)

Your Answer:

2007 2007
2005 2005
2006 2006
2004 2004

The statement 7a divided by 8b can be expressed algebraically as:

1 Mark(s)

Your Answer:

56a⁄b 56a⁄b
56ab 56ab
7a⁄8b 7a⁄8b
8b⁄7a 8b⁄7a

What will be the output of the following Java code? class Output { public static void main(String args[]) { byte a[] = { 65, 66, 67, 68, 69, 70 }; byte b[] = { 71, 72, 73, 74, 75, 76 }; System.arraycopy(a, 2, b, 1, a.length-2); System.out.print(new String(a) + " " + new String(b)); } }

1 Mark(s)

Your Answer:

ABCDEF GHIJKL ABCDEF GHIJKL
ABCDEF GCDEFL ABCDEF GCDEFL
GHIJKL ABCDEF GHIJKL ABCDEF
GCDEFL GHIJKL GCDEFL GHIJKL

The answer of following (a³b)4 is:

1 Mark(s)

Your Answer:

a14 b5 a14 b5
a8 b4 a8 b4
a12 b4 a12 b4
a10 b³ a10 b³

Simplifying the expression (3⁄10)(35⁄54)/(14⁄15) gives:

1 Mark(s)

Your Answer:

24⁄5 24⁄5
35⁄6 35⁄6
5⁄24 5⁄24
6⁄24 6⁄24

The average of the number of students participating in cultural events is:

1 Mark(s)

Your Answer:

48.75 48.75
52.5 52.5
45 45
50 50

What will be the output of the following Python code snippet? l=[1, 2, 4, 5, 2, 'xy', 4] set(l) l

1 Mark(s)

Your Answer:

{1, 2, 4, 5, 2, ‘xy’, 4} [1, 2, 4, 5, 2, ‘xy’, 4]
{1, 2, 4, 5, ‘xy’} [1, 2, 4, 5, 2, ‘xy’, 4]
{1, 5, ‘xy’} [1, 5, ‘xy’] {1, 5, ‘xy’} [1, 5, ‘xy’]
{1, 2, 4, 5, ‘xy’} [1, 2, 4, 5, ‘xy’]

Which of these method is used to begin the execution of a thread?

1 Mark(s)

Your Answer:

run() run()
start() start()
runThread() runThread()
startThread() startThread()

The average age of 6 members of a family is 25 years. If the youngest member of the family is 15 years, old then what was the average age (in years) of the family at the time of the birth of the youngest members?

1 Mark(s)

Your Answer:

9 9
12 12
18 18
24 24

What will be the output of the following Java program if input given is "abc'def/'egh"? class Input_Output { public static void main(String args[]) throws IOException { char c; BufferedReader obj = new BufferedReader(new InputStreamReader(System.in)); do { c = (char) obj.read(); System.out.print(c); } while(c!='\''); } }

1 Mark(s)

Your Answer:

abc' abc'
abcdef/' abcdef/'
abc'def/'egh abc'def/'egh
abcqfghq abcqfghq

If $$ {cot A={n\over{n+1}}}$$ and $$ {cot B={1\over{2n+1}}}$$ then what is the value of cot (A + B)?

1 Mark(s)

Your Answer:

1 1
0 0
-1 -1
2 2

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DSSC Signals and Engineers Academic Test Electrical Mechanical Telecom Civil Engineering Mock 1 : Question 1 of 50