A pin-jointed plane frame is unstable if (A) (m + r) < 2j (B) (m + r) = 2j (C) (m + r) > 2j (D) None of the above Where m is number of members, r is reaction components and j is number of joints

A pin-jointed plane frame is unstable if
(A) (m + r) < 2j
(B) (m + r) = 2j
(C) (m + r) > 2j
(D) None of the above
Where m is number of members, r is reaction components and j is number of joints
by

1 Answer

Answer :

(A) (m + r) < 2j
by

Related questions

If there are m unknown member forces, r unknown reaction components and j number of joints, then the degree of static indeterminacy of a pin-jointed plane frame is given by (A) m + r + 2j (B) m - r + 2j (C) m + r - 2j (D) m + r - 3j

Description : If there are m unknown member forces, r unknown reaction components and j number of joints, then the degree of static indeterminacy of a pin-jointed plane frame is given by (A) m + r + 2j (B) m - r + 2j (C) m + r - 2j (D) m + r - 3j

Last Answer : (C) m + r - 2j

A rigid-jointed plane frame is stable and statically determinate if (A) (m + r) = 2j (B) (m + r) = 3j (C) (3m + r) = 3j (D) (m + 3r) = 3j Where m is number of members, r is reaction components and j is number of joints

Description : A rigid-jointed plane frame is stable and statically determinate if (A) (m + r) = 2j (B) (m + r) = 3j (C) (3m + r) = 3j (D) (m + 3r) = 3j Where m is number of members, r is reaction components and j is number of joints

Last Answer : (C) (3m + r) = 3j

The degree of kinematic indeterminacy of a pin-jointed space frame is (A) 2j - r(B) 3j - r(C) j - 2r(D) j - 3rWhere j is number of joints and r is reaction components

Description : The degree of kinematic indeterminacy of a pin-jointed space frame is (A) 2j - r (B) 3j - r (C) j - 2r (D) j - 3r Where j is number of joints and r is reaction components

Last Answer : (B) 3j - r

If in a pin-jointed plane frame (m + r) > 2j, then the frame is (A) Stable and statically determinate (B) Stable and statically indeterminate (C) Unstable (D) None of the above

Description : If in a pin-jointed plane frame (m + r) > 2j, then the frame is (A) Stable and statically determinate (B) Stable and statically indeterminate (C) Unstable (D) None of the above

Last Answer : (B) Stable and statically indeterminate

The degree of static indeterminacy of a pin-jointed space frame is given by m r j number of joints) (A) m + r - 2j (B) m + r - 3j (C) 3m + r - 3j (D) m + r + 3j

Description : The degree of static indeterminacy of a pin-jointed space frame is given by m r j number of joints) (A) m + r - 2j (B) m + r - 3j (C) 3m + r - 3j (D) m + r + 3j

Last Answer : (B) m + r - 3j

Degree of kinematic indeterminacy of a pin-jointed plane frame is given by (A) 2j - r (B) j - 2r (C) 3j - r (D) 2j + r

Description : Degree of kinematic indeterminacy of a pin-jointed plane frame is given by (A) 2j - r (B) j - 2r (C) 3j - r (D) 2j + r

Last Answer : (A) 2j - r

Degree of static indeterminacy of a rigid-jointed plane frame having 15 members, 3 reaction components and 14 joints is (A) 2 (B) 3 (C) 6 (D) 8

Description : Degree of static indeterminacy of a rigid-jointed plane frame having 15 members, 3 reaction components and 14 joints is (A) 2 (B) 3 (C) 6 (D) 8

Last Answer : (C) 6

The degree of static indeterminacy of a rigid-jointed space frame is (A) m + r - 2j (B) m + r - 3j (C) 3m + r - 3j (D) 6m + r - 6j Where m, r and j have their usual meanings

Description : The degree of static indeterminacy of a rigid-jointed space frame is (A) m + r - 2j (B) m + r - 3j (C) 3m + r - 3j (D) 6m + r - 6j Where m, r and j have their usual meanings

Last Answer : (D) 6m + r - 6j

A truss containing j joints and m members, will be a simple truss if (A) m = 2j - 3 (B) j = 2m - 3 (C) m = 3j - 2 (D) j = 3m - 2

Description : A truss containing j joints and m members, will be a simple truss if  (A) m = 2j - 3  (B) j = 2m - 3  (C) m = 3j - 2  (D) j = 3m - 2 

Last Answer : (A) m = 2j - 3 

If in a rigid-jointed space frame, (6m + r) < 6j, then the frame is (A) Unstable (B) Stable and statically determinate (C) Stable and statically indeterminate (D) None of the above

Description : If in a rigid-jointed space frame, (6m + r) < 6j, then the frame is (A) Unstable (B) Stable and statically determinate (C) Stable and statically indeterminate (D) None of the above

Last Answer : (A) Unstable

Independent displacement components at each joint of a rigid-jointed plane frame are (A) Three linear movements (B) Two linear movements and one rotation (C) One linear movement and two rotations (D) Three rotations

Description : Independent displacement components at each joint of a rigid-jointed plane frame are (A) Three linear movements (B) Two linear movements and one rotation (C) One linear movement and two rotations (D) Three rotations

Last Answer : (B) Two linear movements and one rotation

The number of independent displacement components at each joint of a rigid-jointed space frame is (A) 1 (B) 2 (C) 3 (D) 6

Description : The number of independent displacement components at each joint of a rigid-jointed space frame is (A) 1 (B) 2 (C) 3 (D) 6

Last Answer : (D) 6

Number of unknown internal forces in each member of a rigid jointed plane frame is (A) 1 (B) 2 (C) 3 (D) 6

Description : Number of unknown internal forces in each member of a rigid jointed plane frame is (A) 1 (B) 2 (C) 3 (D) 6

Last Answer : (C) 3

For a stable frame structure, number of members required, is (A) Three times the number of joints minus three (B) Twice the number of joints minus three (C) Twice the number of joints minus two (D) Twice the number of joints minus one

Description : For a stable frame structure, number of members required, is  (A) Three times the number of joints minus three  (B) Twice the number of joints minus three  (C) Twice the number of joints minus two  (D) Twice the number of joints minus one 

Last Answer : (B) Twice the number of joints minus three 

A framed structure is perfect if it contains members equal to (A) 2n 3 (B) nl (C) 2nl (D) 3n² Where n = number of joints in a frame

Description : A framed structure is perfect if it contains members equal to (A) 2n 3 (B) nl (C) 2nl (D) 3n² Where n = number of joints in a frame

Last Answer : (A) 2n 3

Columns of given length, cross-section and material have different values of buckling loads for different end conditions. The strongest column is one whose (A) One end is fixed and other end is hinged (B) Both ends are hinged or pin jointed (C) One end is fixed and the other end entirely free (D) Both the ends are fixed

Description : Columns of given length, cross-section and material have different values of buckling loads for different end conditions. The strongest column is one whose (A) One end is fixed and other end is hinged (B) Both ... (C) One end is fixed and the other end entirely free (D) Both the ends are fixed

Last Answer : (D) Both the ends are fixed

Influence lines are drawn for structures (A) Of any type (B) Statically determinate (C) Pin-jointed truss (D) None of these

Description : Influence lines are drawn for structures  (A) Of any type  (B) Statically determinate  (C) Pin-jointed truss  (D) None of these 

Last Answer : (A) Of any type 

Given B= (10/r)i+( rcos θ) j+k in spherical coordinates. Find Cartesian points at (- 3,4,0) a) -2i + j b) 2i + k c) i + 2j d) –i – 2k

Description : Given B= (10/r)i+( rcos θ) j+k in spherical coordinates. Find Cartesian points at (- 3,4,0) a) -2i + j b) 2i + k c) i + 2j d) –i – 2k

Last Answer : a) -2i + j

For a perfect frame having 13 members the number of joints must be a.8 b.6 c.7 d.107 dynes e.9

Description : For a perfect frame having 13 members the number of joints must be a.8 b.6 c.7 d.107 dynes e.9

Last Answer : a. 8

Columns of given length, cross-section and material have different values of buckling loads for different end conditions. The strongest column is one whose (a) One end is fixed and other end is hinged (b) Both ends are hinged or pin jointed (c) One end is fixed and the other end entirely free (d) Both the ends are fixed

Description : Columns of given length, cross-section and material have different values of buckling loads for different end conditions. The strongest column is one whose (a) One end is fixed and other end is hinged (b) ... (c) One end is fixed and the other end entirely free (d) Both the ends are fixed

Last Answer : (d) Both the ends are fixed

When loads are applied proportionately to a frame structure containing its members in one plane, the structure is called (A) Grid frame (B) Plane frame (C) Space frame (D) Truss frame

Description : When loads are applied proportionately to a frame structure containing its members in one plane, the structure is called (A) Grid frame (B) Plane frame (C) Space frame (D) Truss frame

Last Answer : (C) Space frame

If A  = 2i - j + k and B = i + 2j - k are two vectors, find |A x B|.

Description : If A  = 2i - j + k and B = i + 2j - k are two vectors, find |A x B|.

Last Answer : If A = 2i - j + k and B = i + 2j - k are two vectors, find |A x B|.

Find the angle between the vectors A = i + 2j - k and  B = -i + j - 2k.

Description : Find the angle between the vectors A = i + 2j - k and  B = -i + j - 2k.

Last Answer : Find the angle between the vectors A = i + 2j - k and B = -i + j - 2k.

Given a  = i + 2j and b = 2i + j, what are the magnitudes of the two vectors? Are these two vectors equal?

Description : Given a  = i + 2j and b = 2i + j, what are the magnitudes of the two vectors? Are these two vectors equal?

Last Answer : Given \(\overset\rightarrow{a}\) = i + 2j and \(\overset\rightarrow{b}\) = 2i + j, ... magnitudes of the two vectors? Are these two vectors equal?

Find the power, given energy E = 2J and current density J = x 2 varies from x = 0 and x = 1. a) 1/3 b) 2/3 c) 1 d) 4/3

Description : Find the power, given energy E = 2J and current density J = x 2 varies from x = 0 and x = 1. a) 1/3 b) 2/3 c) 1 d) 4/3

Last Answer : b) 2/3

The reaction at the supports will be vertical to the plane of the support if the frame structure rests on (A) Roller supports (B) Free supports (C) Hinged supports (D) All the above

Description : The reaction at the supports will be vertical to the plane of the support if the frame structure rests  on  (A) Roller supports  (B) Free supports  (C) Hinged supports  (D) All the above 

Last Answer : (D) All the above 

According to the recommendations of IS : 456-1978, the expansion joints (A) Are provided where plane changes abruptly (B) Are provided to ensure minimum resistance (C) Do not carry reinforcement across them (D) All the above

Description : According to the recommendations of IS : 456-1978, the expansion joints (A) Are provided where plane changes abruptly (B) Are provided to ensure minimum resistance (C) Do not carry reinforcement across them (D) All the above

Last Answer : Answer: Option D

Top chord of a truss is continuous over joints l apart. Effective lengths of the member in the plane perpendicular to the truss is (a) 0.7 l (b) 0.85 l (c ) l (d) 1.5 l

Description : Top chord of a truss is continuous over joints l apart. Effective lengths of the member in the plane perpendicular to the truss is (a) 0.7 l (b) 0.85 l (c ) l (d) 1.5 l

Last Answer : (c ) l

Forked - pin joints is also called as... A. Cotter joint B. Knuckle joint C. Universal coupling D. Bolted joint

Description : Forked - pin joints is also called as... A. Cotter joint B. Knuckle joint C. Universal coupling D. Bolted joint

Last Answer : B. Knuckle joint

Given options show wooden joints, each made of 2 wooden blocks of different colours with a wooden pin at the centre. All joints can be released along the Z axis. Which of the joints can be released along the Y axis?

Description : Given options show wooden joints, each made of 2 wooden blocks of different colours with a wooden pin at the centre. All joints can be released along the Z axis. Which of the joints can be released along the Y axis?

Last Answer : C

The Metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select the correct statement. (A) The bodies A and B have equal stability (B) The body A is more stable than body B (C) The body B is more stable than body A (D) The bodies A and B are unstable

Description : The Metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select the correct statement. (A) The bodies A and B have equal stability (B) The body A is more stable than body B (C) The body B is more stable than body A (D) The bodies A and B are unstable

Last Answer : Answer: Option C

The forces in the members of simple trusses, may be analysed by (A) Graphical method (B) Method of joints (C) Method of sections (D) All the above

Description : The forces in the members of simple trusses, may be analysed by  (A) Graphical method  (B) Method of joints  (C) Method of sections  (D) All the above 

Last Answer : (D) All the above 

Stress in members of statically determinate simple frames, can be determined by (A) Method of joints (B) Method of sections (C) Graphical solution (D) All the above

Description : Stress in members of statically determinate simple frames, can be determined by (A) Method of joints (B) Method of sections (C) Graphical solution (D) All the above

Last Answer : (D) All the above

Steam distillation is not recommended to be used, if the (A) Azeotropic mixture is to be separated and the final product is miscible with water (B) Liquids decompose, if distilled directly at atmospheric pressure (C) Material cannot be distilled by indirect heating even under low pressure, because of the high boiling temperature (D) Material to be distilled is thermally unstable or has the tendency to react with other components associated with it, at the boiling temperature

Description : Steam distillation is not recommended to be used, if the (A) Azeotropic mixture is to be separated and the final product is miscible with water (B) Liquids decompose, if ... unstable or has the tendency to react with other components associated with it, at the boiling temperature

Last Answer : (A) Azeotropic mixture is to be separated and the final product is miscible with water

Define stability. Sketch the root locations in the s-plane for stable and unstable system.

Description : Define stability. Sketch the root locations in the s-plane for stable and unstable system.

Last Answer : Stability: The system is said to be stable if it produces bounded output for a bounded input. It is used to define usefulness of the system. The stability implies that the system performance should not ... absence of the input, output may not return to zero it shows certain output without input. 

At either end of a plane frame, maximum number of possible transverse shear forces, are (A) One (B) Two (C) Three (D) Four

Description : At either end of a plane frame, maximum number of possible transverse shear forces, are (A) One (B) Two (C) Three (D) Four

Last Answer : (A) One

At either end of a plane frame, maximum number of possible bending moments, are (A) Zero (B) One (C) Two (D) Three

Description : At either end of a plane frame, maximum number of possible bending moments, are (A) Zero (B) One (C) Two (D) Three

Last Answer : (A) Zero

A couple consists of a force P acting at a point A whose coordinates are (-1,2,4) m and force - F acting at a point whose coordinates are (2,3, -2)m. If F = 3i + 2j - 4k in kg units the moment of the couple in kg - m units would be a.8i - 6j - 3k b.12i - 3j + k c.16i - 12j - 6k d.4i - 3j + k e.8i + 5j + 3k

Description : A couple consists of a force P acting at a point A whose coordinates are (-1,2,4) m and force - F acting at a point whose coordinates are (2,3, -2)m. If F = 3i + 2j - 4k in kg units the moment of the couple in kg - m ... .8i - 6j - 3k b.12i - 3j + k c.16i - 12j - 6k d.4i - 3j + k e.8i + 5j + 3k

Last Answer : a. 8i - 6j - 3k

A seed drill with mechanical seed metering device mainly consists of: Frame, Seed box, Seed metering mechanism, drive transmission system, Furrow openers, Covering device, ……, hitch frame and Transport wheels. b. Differential c. U.V joints d. None of the above.

Description : A seed drill with mechanical seed metering device mainly consists of: Frame, Seed box, Seed metering mechanism, drive transmission system, Furrow openers, Covering device, ……, hitch frame and Transport wheels. b. Differential c. U.V joints d. None of the above.

Last Answer : Ans - a. clutch

Describe with sketch any two joints in doors and window frame.

Description : Describe with sketch any two joints in doors and window frame.

Last Answer : 1. Connections must be adequate structurally. 2. Means of connections between adjacent must allow safe and speedy erection regardless of minor inherent inaccuracies in precast elements and in-situ concrete. 3. ... height) of the frames shall confirm to the requirements of IS : 4021-1976

Pick up the correct statement from the following: (A) In a king post truss, principal rafter and tie beams are jointed together with a bridle joint (B) Joint between the principal rafter and the king post is made by making tenon and mortise respectively (C) Joint between strut and king post, is generally of mortise and tenon type (D) All the abov

Description : Pick up the correct statement from the following: (A) In a king post truss, principal rafter and tie beams are jointed together with a bridle joint (B) Joint between the principal rafter and the king ... ) Joint between strut and king post, is generally of mortise and tenon type (D) All the above

Last Answer : Answer: Option D

Find the current density on the conductor surface when a magnetic field H = 3cos x i + zcos x j A/m, for z>0 and zero, otherwise is applied to a perfectly conducting surface in xy plane. a) cos x i b) –cos x i c) cos x j d) –cos x j

Description : Find the current density on the conductor surface when a magnetic field H = 3cos x i + zcos x j A/m, for z>0 and zero, otherwise is applied to a perfectly conducting surface in xy plane. a) cos x i b) –cos x i c) cos x j d) –cos x j

Last Answer : b) –cos x i

An R.C.C beam of 25 cm width has a clear span of 5 metres and carries a U.D.L. of 2000 kg/m inclusive of its self weight. If the lever arm of the section is 45 cm., the beam is (A) Safe in shear (B) Is safe with stirrups (C) Is safe with stirrups and inclined members (D) Needs revision of the section

Description : An R.C.C beam of 25 cm width has a clear span of 5 metres and carries a U.D.L. of 2000 kg/m inclusive of its self weight. If the lever arm of the section is 45 cm., the beam is ( ... shear (B) Is safe with stirrups (C) Is safe with stirrups and inclined members (D) Needs revision of the section

Last Answer : Answer: Option A

Struts are load carrying members of a frame structure which are subjected to (A) Axial tension loads (B) Axial compressive loads (C) Torsional loads (D) Transverse loads

Description : Struts are load carrying members of a frame structure which are subjected to  (A) Axial tension loads  (B) Axial compressive loads  (C) Torsional loads  (D) Transverse loads 

Last Answer : (B) Axial compressive loads 

Ties are load carrying members of a frame, which are subjected to (A) Transverse loads (B) Axial tension loads (C) Axial compressive loads (D) Torsional loads

Description : Ties are load carrying members of a frame, which are subjected to  (A) Transverse loads  (B) Axial tension loads  (C) Axial compressive loads  (D) Torsional loads 

Last Answer : (B) Axial tension loads 

determining stresses in frames by methods of sections, the frame is divided into two parts by an imaginary section drawn in such a way as not to cut more than (A) Two members with unknown forces of the frame (B) Three members with unknown forces of the frame (C) Four members with unknown forces of the frame (D) Three members with known forces of the frame

Description : determining stresses in frames by methods of sections, the frame is divided into two parts by an imaginary section drawn in such a way as not to cut more than (A) Two members with unknown forces ... C) Four members with unknown forces of the frame (D) Three members with known forces of the frame

Last Answer : (B) Three members with unknown forces of the frame

When a number of hair pin bends are introduced, a minimum intervening distance in between is kept (A) 20 m (B) 40 m (C) 60 m (D) 100 m

Description : When a number of hair pin bends are introduced, a minimum intervening distance in between is kept (A) 20 m (B) 40 m (C) 60 m (D) 100 m

Last Answer : Answer: Option C

The distance between two stations M and N is L kilometers. All frames are K bits long. The propagation delay per kilometer is t seconds. Let R bits/second be the channelcapacity. Assuming that processing delay is negligible, the minimum number of bits for the sequence number field in a frame for maximum utilization, when the sliding window protocol used is: a. A b. B c. C d. D

Description : The distance between two stations M and N is L kilometers. All frames are K bits long. The propagation delay per kilometer is t seconds. Let R bits/second be the channel capacity. Assuming that processing ... maximum utilization, when the sliding window protocol used is: a. A b. B c. C d. D

Last Answer : c. C

The difference in the reservoir level and the lowest point of the water mains is 180 m. The expected pressure due to water hammer is 7.5 kg/cm2 in a pressure conduit of diameter 1 m. Assuming the efficiency of the riveted joints of the pipe as 0.6 and minimum cover 3 mm for corrosion, the thickness of the pipe materials, is (A) 10 mm (B) 15 mm (C) 20 mm (D) 25 mm

Description : The difference in the reservoir level and the lowest point of the water mains is 180 m. The  expected pressure due to water hammer is 7.5 kg/cm2  in a pressure conduit of diameter 1 m.  Assuming the efficiency of the ... , is  (A) 10 mm  (B) 15 mm  (C) 20 mm  (D) 25 mm 

Last Answer : (C) 20 mm

Transverse joints are provided at distances varying from (A) 10 m to 15 m (B) 12 m to 18 m (C) 16 m to 24 m (D) 17 m to 27 m

Description : Transverse joints are provided at distances varying from (A) 10 m to 15 m (B) 12 m to 18 m (C) 16 m to 24 m (D) 17 m to 27 m

Last Answer : Answer: Option D