Civil Engineering Mcqs

Two circular discs of same weight and thickness are made from metals having different densities. Which disc will have the larger rotational inertia about its central axis ?

(A) disc with larger density
(B) disc with smaller density
(C) both discs will have same rotational inertia
(D) none of the above

Submitted By :Ali Uppal

A symmetrical body is rotating about its axis of symmetry, its moment of inertia about the axis of rotation being 2 kg -m2 and its rate of rotation 2 revolutions/see. The angular momentum of the body in kg-m2/sec is_____________________?

(A) 4
(B) 6 7i
(C) 8TC
(D) 8

Submitted By :Ali Uppal

A sphere and a cylinder having the same mass and radii start from rest and roll down the same inclined plane. Which body gets to the bottom first ?

(A) sphere with greater rotational energy at bottom than cylinder
(B) sphere with lesser rotational energy at bottom than cylinder
(C) cylinder with greater rotational energy at bottom than sphere
(D) both reach the bottom simultaneously with equal rotational energy at bottom

Submitted By :Ali Uppal

A solid cylinder of mass M and radius R rolls down an inclined plane without slipping. The acceleration of center of mass of rolling cylinder is________________?

(A) (1/3) g sinB
(B) (2/3) g cos 9
(C) (2/3) g sin 0
(D) g sin 9

Submitted By :Ali Uppal

A cylinder will slip on an inclined plane of inclination 0 if the coefficient of static friction between plane and cylinder is_____________________?

(A) less than (1/3) tan 0
(B) less than (2/3) tan 0
(C) less than (1/3) sin 6
(D) less than (2/3) sin 6

Submitted By :Ali Uppal

If the angular distance, 0 = 2t3 – 3t2, the angular acceleration at t = 1 sec. is__________________?

(A) 1 rad/sec2
(B) 4 rad/sec2
(C) 6 rad/sec2
(D) 12 rad/sec2

Submitted By :Ali Uppal

A particle moves in a straight line and its position is defined by the equation x = 6 t2 – t3 where t is expressed in seconds and x in meters. The maximum velocity during the motion is_________________?

(A) 6 m/sec
(B) 12 m/sec
(C) 24 m/sec
(D) 48 m/sec

Submitted By :Ali Uppal

Instantaneous center is at infinity when the angular velocity is _________________?

(A) constant
(B) zero
(C) maximum
(D) minimum

Submitted By :Ali Uppal

Irrigation water having the concentration of Na++ , Ca++ and Mg++ as 20, 3 and 1 Milli equivalent per litre respectively will be classified as__________________?

(A) low sodium water
(B) medium sodium water
(C) high sodium water
(D) very high sodium water

Submitted By :Ali Uppal

The value of Sodium Absorption Ratio for high sodium water lies between________________?

(A) 0 to 10
(B) 10 to 18
(C) 18 to 26
(D) 26 to 34

Submitted By :Ali Uppal

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