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Questions asked by balaji.thirumalai
Questions
4474
questions
1
answer selected
(chatquestion)...35.A cylindrical vessel of radius r is filled with water. The sum of magnitude of force on the vertical walls of vessel is equal to the force on the bottom of vessel. The height of water in vessel is- (1) 2r (2) r (3) - (4) 4 2
other
telegram-1404
asked
May 18, 2020
1
answer
(chatquestion)...62.A common hydrometer has a uniform stem graduated downwards from 0,1,2,... up to 10. When floating in pure water it reads 0 and in a liquid of relative density 1.4, it reads 10. Relative density of a liquid in which it reads 5, is- (1) 1.15 (3) 1.25 (2) 1.20 (4) 1.30
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telegram-1402
asked
May 18, 2020
1
answer
(chatquestion)...Two cars A and B starts from'O' simultaneously with uniform speed V such that A is along diameter and B is along circular path of radiusRas shown in the figure. The velocity of B with respect to A after time is 2V O v2Vi – Vj O (V – VT) i – Vj O Vi + v2Vj O oi...(Plz explain this question)
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telegram-1396
asked
May 18, 2020
1
answer
(chatquestion)...2 1. Using elementary transformations find the inverse of 3 -4 3 If A = -1 verify that A² – 5A+71 = 0, hence find A 2
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telegram-1389
asked
May 17, 2020
1
answer
(chatquestion)...5 English- A + B Yellow NaOH ppt Identify D :- 50
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telegram-1384
asked
May 17, 2020
1
answer
(chatquestion)...A particle moving with constant speed turns left by an angle of 74° after travelling every 1 m distance. If it returns to its startine point after 18 sec, then the magnitude of average acceleration of the particle from it's initial position to just before it takes its second turn is (A) 30 m/sec" (B) 40 m/ sec? (C) 50 m/ sec² (D) 60 m/ sec A truck of width 2m is moving with a uniforn
other
telegram-1368
asked
May 17, 2020
1
answer
(chatquestion)...37 If cos , COS T 57 7' COS are the roots of the equation ax+ bx² + cx + d=0 then (A) a+b+c= 0 (C) a +d 8 (B) b+c+d= -7 (D) a +b+d = 5
other
telegram-1366
asked
May 17, 2020
1
answer
(chatquestion)...25.An U-tube is partially filled with water. Oil is next poured into one side, until water rises by 25.0 cm on the other side. Relative density of oil is 0.95. Height to which oil level will stand higher than water level, is- (1) 2.52 cm (2) 2.63 cm (3) 2.75 cm (4) 2.95 cm P20.95 Oil Water 254m
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telegram-1364
asked
May 17, 2020
1
answer
(chatquestion)...Consider a homogeneous spring with rest length l = 11.3cm, stiffness k = 125kg ·s2 ¬1 placed on a horizontal pad. We fix one of its endpoints in place in such a way that the spring can still freely rotate around this endpoint. Then, we remove the pad. Calculate the difference between the total potential energy of the spring in its new equilibrium position and in the initial position. and linear density A = 9.7kg -m
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telegram-1362
asked
May 16, 2020
1
answer
(chatquestion)...12. Write the simplest form : Sin(tanx +cotx) "C VIG C VIG
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telegram-1356
asked
May 16, 2020
1
answer
(chatquestion)...4. If cos = 2 tan a find a
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telegram-1352
asked
May 16, 2020
0
answers
(chatquestion)...HCI...(With detailed soln plzz)
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telegram-1346
asked
May 16, 2020
0
answers
(chatquestion)...346(FG) 26 3. Explain the working of Zener diode with the help of diagram and write down its use. A potential barrier of 0-40 volt exists across a p-n junction. If the depletion region is 0:3 um wide, what is the intensity of electric field in this region ?
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telegram-1339
asked
May 16, 2020
1
answer
(chatquestion)...16) Show that the relation R in the set A of all the books in a library of a college, given by R = {(x, y): x and y have same number of pages} is an equivalence relation
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telegram-1336
asked
May 16, 2020
1
answer
(chatquestion)...15) Detine Signum function? Show that it is neither one-one nor onto
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telegram-1332
asked
May 16, 2020
1
answer
(chatquestion)...14) Check the function f(x) = x+ x, x eR is onto or not
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telegram-1330
asked
May 16, 2020
1
answer
(chatquestion)...13) Check the function f(x) = Vx ,xER is onto or not YAN
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telegram-1328
asked
May 16, 2020
0
answers
(chatquestion)...5T Explain the working of Zener diode with the help of diagram and write down its use. A potential barrier of 0-40 volt exists across a p-n junction. If the depletion region is 0-3 um wide, what is the intensity of electric field in this region ?
other
telegram-1324
asked
May 16, 2020
0
answers
(chatquestion)...A particle moving with constant speed turns left by an angle of 74° after travelling every 1 m distance. If it returns to its startine point after 18 sec, then the magnitude of average acceleration of the particle from it's initial position to just before it takes its second turn is (A) 30 m/sec (B) 40 m/ sec? (C) 50 m/ sec2 77 (D) 60 m/ sec A truck of width 2m is moving with a uniforn
other
telegram-1321
asked
May 16, 2020
0
answers
(chatquestion)...37 If cos , COS T 57 7' COS are the roots of the equation ax+ bx² + cx + d=0 then (A) a+b+c= 0 (C) a +d 8 (B) b+c+d= -7 (D) a +b+d = 5
other
telegram-1320
asked
May 16, 2020
0
answers
(chatquestion)...72.The upper end of a wire of radius 1.0 mm and length 2.0 m is clamped. Other end of wire is twisted through an angle of 12°. The angle of shear is, nearly- (1) 0.012° (3) 1.2° (2) 0.12° (4) 12°
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telegram-1318
asked
May 15, 2020
0
answers
(chatquestion)...71.The bulk modulus of a metal is 1.234x100 N/m² and its density is 10* kg/m. Density of metal under pressure 10' N/m², will be- 1.233 1.235 (1) 1.234 x10 kg/m³ (2) -x10 kg/m³ 1.234 1.234 (3) 1.233 1.234 (4) 1.235 3 -x10 kg/m³ x10 kg/m'
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telegram-1316
asked
May 15, 2020
0
answers
(chatquestion)...Consider a homogeneous spring with rest length l = 11.3cm, stiffness k = 125kg ·s2 ¬1 placed on a horizontal pad. We fix one of its endpoints in place in such a way that the spring can still freely rotate around this endpoint. Then, we remove the pad. Calculate the difference between the total potential energy of the spring in its new equilibrium position and in the initial position. and linear density A = 9.7kg -m
other
telegram-1314
asked
May 15, 2020
0
answers
(chatquestion)...12229279 The ratio of tine constant in build up and dencay in the circuit shown in figure is R 2R L lell 3)1:1 b) 3:2 S 2:3 d 1:3 d'doubtnut
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telegram-1309
asked
May 15, 2020
1
answer
(chatquestion)...11) Let the functions f and g be real functions defined by f (x) = Vx+ 4,x 2-4 and g(x) = Vx+4,x2 4. Find the functions f + g,f - 8, fg. f / g
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telegram-1307
asked
May 15, 2020
1
answer
(chatquestion)...10. In the following relations ,determine whether the following relations are reflexive, symmetric or transitive: A = Z*;aRb iff a = b" for some nɛZ*
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telegram-1305
asked
May 15, 2020
0
answers
(chatquestion)...Find the range of the function f(x) = x² + x? +1 3. %3D
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telegram-1303
asked
May 15, 2020
0
answers
(chatquestion)...1. Find the domain of each of the following functions: (a) f(x) = Vx³ - 3x+2, (b
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telegram-1301
asked
May 15, 2020
0
answers
(chatquestion)...Page CosR - Cesn %3D...(find point of local maxima and minima for following function)
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telegram-1297
asked
May 15, 2020
1
answer
(chatquestion)...71.The bulk modulus of a metal is 1.234x100 N/m² and its density is 10* kg/m. Density of metal under pressure 10' N/m², will be- 1.235 1.233 (1) -×10 kg/m³ (2) -x10 kg/m³ 1.234 1.234 1.234 (3) 1.233 1.234 (4) 1.235 -x10 kg/m³ x104 kg/m 3 72.The upper end of a wire of radius 1.0 mm and length 2.0 m is clamped. Other end of wire is twisted through an angle of 12°. The angle of shear is, nearly- (1) 0.012° (3) 1.2° (2) 0.12° (4) 12°
other
telegram-1294
asked
May 15, 2020
0
answers
(chatquestion)...Q.180 Green house gases are YAbsorbers of long-wave radiations from earth (2) Transparent to both solar radiations and long-wave radiations from earth 3T Absorbers of solar radiations for warming the atmosphere (4) Transparent to emissions from earth for passage into outer space
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telegram-1290
asked
May 15, 2020
0
answers
(chatquestion)...A gaseous hydrocarbon R of mass 7.0g occupies a volume of 22.4 dm3 at STP. If the percentage composition by ma's of hydrogen is 14.3, determine its I. Empirical formula II. Molecular formula
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telegram-1286
asked
May 15, 2020
1
answer
(chatquestion)...Calculate the amount of current drawn by a 15hp pump in a 3phase power supply?
other
telegram-1284
asked
May 15, 2020
0
answers
(chatquestion)...Use the substitution v =(y/x²) to solve the differential equation: y'=(2y/x) + cos(y/x²)
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telegram-1282
asked
May 15, 2020
0
answers
(chatquestion)...Solve the non homogenous differential equation: y"+y=5sint. [Hint: Use yp= At sin t + B cost]
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telegram-1280
asked
May 15, 2020
0
answers
(chatquestion)...a.a a.b а.а а.bl The value of a.b b.b
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telegram-488
asked
May 14, 2020
0
answers
(chatquestion)...8. Let A = {1,2,3,. . ,21,22}.Let R be the equivalence relation on A defined by %3D the congruence modulo 7. Find the partition defined by this relation.
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telegram-1274
asked
May 14, 2020
0
answers
(chatquestion)...43 +し find the Sum of The Saquence
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telegram-1272
asked
May 14, 2020
1
answer
(chatquestion)...19. In the given network of capacitors, the equivalent capacitance between points A and B is 6. (1) В (2) 2 C (3) 11 (4) c O |5
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telegram-1269
asked
May 14, 2020
0
answers
(chatquestion)...Let R be the equivalence relation on the set Z defined by iff xRy fx y(mod 3). Show that the equivalent classes of 1 and 4 are equal.
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telegram-1267
asked
May 14, 2020
0
answers
(chatquestion)...Tan.20 こ5 find &
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telegram-1252
asked
May 14, 2020
1
answer
(chatquestion)...Page: Date: / O The Redies of the base 2 cylindor Ara lu the fhoe hight in Roto find these Ratio 'curved burfac. Aveeas 3: And Ration En Ratio 2 is to 3
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telegram-1236
asked
May 14, 2020
1
answer
(chatquestion)...The Biameter of cylinder And, its tergtth height 15cm then lebral Suwrfacp Ascoa find
other
telegram-1232
asked
May 14, 2020
1
answer
(chatquestion)...Let R be the relation on the set R of Real numbers defined by {(a,b)ɛR x R :a² +b? =1} Show that the relation R is symmetric and neither reflexive nor transitive.
other
telegram-1229
asked
May 14, 2020
1
answer
(chatquestion)...2. Let R be a relation from N to N defined by R = {(a,b): a,bɛN and transitive SHA =b² } Check whether its symmetric, reflexive
other
telegram-1222
asked
May 14, 2020
0
answers
(chatquestion)...Example 4. Let S be the closed surface that consists of the hemisphere r²+y²+z² = 1, z > 0, and its base x² + y² < 1, z = 0. Let E be the electric field defined by E(x, y, z) = 2xi + 2yj+ 2zk. Find the electric flux across S.
other
telegram-1216
asked
May 14, 2020
1
answer
(chatquestion)...Let A= {1,2,3,. .40} and R be a relation "is one-fifth of "on A. Write as a subset of Ax A and also find the domain and range of R
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telegram-1213
asked
May 14, 2020
1
answer
(chatquestion)...8. If f: R → R be given by f( x) = ( 3– x' ) ³ then find fof (x) 113
other
telegram-1210
asked
May 14, 2020
1
answer
(chatquestion)...(4) Cannot predict CH, 22. CCI, + HBr "A" : High temperature The compound Ais Doubt Cн, (1) (2) Br Br CH,Br CH,Br (4) (3) 17633456
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telegram-1203
asked
May 13, 2020
1
answer
(chatquestion)...7. Let f and g be real valued function, such that (fog)(x) = cos x ,(gof)(x) = cos x Find the functions f and g THE
other
telegram-1196
asked
May 13, 2020
1
answer
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