Machines and Graphics Multiple Choice Questions with Answers

Questions

61 The dimensions of centrifugal force are

A M1 L2 T2

B M'L'T1

C M'L'T2

D M'L-'T2

Answer: M'L'T2

62 A quantity measured in the C.G.S system of units has dimensions M"2L3 T3/2. What numerical factor would be required to convert the quantity to SI units ?

A 1

B 100

C 1/100

D 1/10000

View Answer

Answer: 1

Article and Schedule Quiz	Start Test!

DOWNLOAD CURRENT AFFAIRS PDF FROM APP

63 In SI units, the units of force and energy are respectively

A Newton and watt

B Dyne and erg

C Newton and joule

D kg-wt and joule

View Answer

Answer: Newton and joule

64 The ratio of unit of force in gravitational system to that in absolute system is

A 1

B g

C 1/g

D none of the above

View Answer

Answer: g

65 A quantity whose dimensions are M2L2 T3 could be the product of

A Force And Pressure

B Mass And Power

C Energy And Velocity

D Force And Velocity

View Answer

Answer: Mass And Power

66 Joule is the unit of

A Power

B Impulse

C Work

D Momentum

View Answer

Answer: Impulse

67 The ratio of kinetic energy and potential energy of a simple harmonic oscillator, at a displacement equal to half its amplitude is given by

A 1:2

B 1:1

C 2:1

D 3:1

View Answer

Answer: 3:1

68 The maximum displacement of a particle executing S.H.M. corresponds to

A zero potential energy and maximum kinetic energy

B zero kinetic energy and maximum potential energy

C maximum kinetic energy and maxi-mum potential energy

D minimum kinetic energy and minimum potential energy

View Answer

Answer: zero kinetic energy and maximum potential energy

69 The time period of a simple pendulum depends on i) mass of suspended particle ii) length of the pendulum iii) acceleration due to gravity The correct answer is

A only (i)

B both (ii) and (iii)

C both (i) and (iii)

D all are correct

View Answer

Answer: both (ii) and (iii)

70 The angle of projection at which the horizontal range and maximum height of a projectile are equal to

A 45°

B tan-1 (2)

C tan-' (4)

D tan"1 (1/4)

View Answer

Answer: tan-' (4)

71 A stone is thrown up a slope of inclination 60° to the horizontal. At what angle to the slope must the stone be thrown so as to land as far as possible from the point of projection ?

A 15°

B 30°

C 45°

D 75°

View Answer

Answer: 15°

72 A circular disc rotates at n rpm. The angular velocity of a circular ring of same mass and radius as the disc and to have the same angular momentum is

A n rpm

B n/2 rpm

C n/4 rpm

D 2n rpm

View Answer

Answer: n/2 rpm

73 A flywheel of moment of inertia 20 kg-m" is acted upon by a tangential force of 5 N at 2 m from its axis, for 3 seconds. The increase in angular velocity in radian persecond is

A 1/2

B 3/2

C 2

D 3

View Answer

Answer: 3/2

74 Select the correct statement

A The body centrode rolls on the space centrode

B The space centrode rolls on the body centrode

C Both body and space centrodes may role on each other

D The body centrode never touches space centrode

View Answer

Answer: The body centrode rolls on the space centrode

75 Instantaneous center is at infinity when the angular velocity is

A constant

B zero

C maximum

D minimum

View Answer

Answer: zero

76 A 2 m long ladder rests against a wall and makes an angle of 30° with the horizontal floor. Where will be the instantaneous center of rotation when the ladder starts slipping ? i) 1.0 in from the wall ii) 1.732 m from the wall iii) 1.0 m above the floor iv) 1.732 m above the floor The correct answer is

A (i) and (iii)

B (i) and (iv)

C (ii) and (iii)

D (ii) and (iv)

View Answer

Answer: (ii) and (iv)

77 The angle of projection at which the horizontal range and maximum height of a projectile are equal to

A 36°

B 45°

C 56°

D 76°

View Answer

Answer: 76°

78 The maximum value of the horizontal range for a projectile projected with a velocity of 98 m/sec is

A 98 m

B 490 m

C 980 m

D 1960 m

View Answer

Answer: 980 m

79 A projectile has maximum range of 40 m on a horizontal plane. If angle of projection is a and the time of flight is 1 second, then sin a must be about

A 1/4

B 1/3

C 1/2

D 1/5

View Answer

Answer: 1/4

80 If the direction of projection bisects the angle between the vertical and the inclined plane, then the range of projectile on the inclined plane is

A zero

B maximum

C minimum

D unpredictable

View Answer

Answer: maximum

ADRE 2.0 FULL LENGTH MOCK TEST

Take Mock Tests

Missiles Mock Test	Start Test!
SSC MTS Mock Test	Start Test
IBPS CLERK MOCK TEST	Start Test
SSC MTS 2022 JULY 26 Shift 1 (ENGLISH)	Start Test!
SSC GD Previous Year Paper 2021 Nov 17 Shift - I (Hindi)	Start Test!
SSC CGL Tier - 1 PYP 2022 April 21 Shift- 1 (ENGLISH)	Start Test!
MPSC PAPER I MOCK TEST 1 (ENGLISH)	Start Test!
IB Security Assistant Mock test 1 (english)	Start Test!
UP POLICE CONSTABLE MOCK TEST 1	Start Test!
DELHI POLICE CONSTABLE MOCK TEST 1 (HINDI)	Start Test!