In the arrangement shown below, two trucks A and B are held in position with spring compressed. When they are released and the spring has fallen away, A is found to be moving to the left at 2 m/s. The energy stored in the compressed spring was (a) 12 J (b) 24 J (c) 18 J (d) 36 J

In the arrangement shown below, two trucks A and B are held in position with spring compressed. When they are released and the spring has fallen away, A is found to be moving to the left at 2 m/s. The energy stored in the compressed spring was (a) 12 J (b) 24 J (c) 18 J (d) 36 J
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Ans:(b) Direction: In the following question, a statement of Assertion (A) is given followed by corresponding Reason (R), just below it. Read the statements carefully and mark the correct answer: (a) If both A and R are true and R is the correct explanation of A. (b) If both A and R are true but R is not the correct explanation of A. (c) If A is true but R is false  
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Eight persons P, Q, R, S, W, X, Y and Z in which 4 females are facing towards and 4 males facing away from the center. Males and females are seated alternately. I. X is male, W position is 3rd to the right of X and exactly opposite to Q. II. P is 2nd to the left of W. III. S and R are facing each other as well R & Y are neighbors. Who are all females in the given arrangement? a) S, Q, R, W b) P, Q, Y, W c) P, Q, R, W d) P, Q, R, S

Description : Eight persons P, Q, R, S, W, X, Y and Z in which 4 females are facing towards and 4 males facing away from the center. Males and females are seated alternately. I. X is male, W position is 3rd to the right of X and exactly opposite to Q. ... a) S, Q, R, W b) P, Q, Y, W c) P, Q, R, W d) P, Q, R, S

Last Answer : b) P, Q, Y, W

A railway wagon moving with a speed of 1.5m/s is brought to rest by bumper consisting of two springs. Mass of wagon is 100kg. The springs are compressed by 125mm. Calculate the maximum force acting on each spring. a) 1200N b) 1500N c) 1800N d) 2000N

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Last Answer : c) 1800N

The spring is compressed by a distance a and released. The block again comes to rest when the spring is elongated by a distance `b`. During this

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The odd numbers from 1 to 45 which are exactly divisible by 3 are arranged in an ascending order. The number at 6 th position is (A) 18 (B) 24 (C) 33 (D) 36

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Last Answer : c) 36

X,Y and Z can do a certain job in 72,108 and 144 days respectively. They started the job but X left 16 days before the completion of the job while Y left 24 days before the completion. The number of days for which Z worked is. a) 12 days b) 24 days c) 36 days d) 48 days

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Last Answer : ANSWER: 90 JOULES

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50'. What number is missing? -Riddles

Description : 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50'. What number is missing? -Riddles

Last Answer : 22

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Last Answer : (B) 18

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Last Answer : Answer: A

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Last Answer : Answer: C In the sequence of numbers 8, 24, 12, X, 18, 54 8*3= 24, 12*3= 36, 18*3= 54, i.e multiple of 3.

Insert the missing number: 8 24 12 ? 18 54 (A) 26 (B) 24 (C) 36 (D) 32

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Last Answer : Answer: B

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A body weighing one tonne falls through 8 cm on to a spring of stiffness 500 kg/cm the spring will be compressed through a.8 cm b.6 cm c.4 cm d.10 cm e.12 cm

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Last Answer : a. 8 cm

Calculate equivalent stiffness of the spring for the system shown below, which has spring stiffness of 3000 N/m a. 1000 N/m b. 2250 N/m c. 2000 N/m d. None of the above

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A 2 kg block is dropped from a height of 4 metre onto a spring of force constant k = 1960 N/m. The spring will be compressed through a.1 cm b.4.5 cm c.3 cm d.8 cm e.107 dynes

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Energy stored in a compressed string is?

Description : Energy stored in a compressed string is?

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When the control handle is in the 'off' position, the solenoid actuated brake of the electric winch is _________. A. de-energized and the brake is released B. energized and the brake is released C. energized and the brake is set by a spring D. de-energized and the brake is set by a spring

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Last Answer : Answer: D

A bed of spherical particles (specific gravity 2.5) of uniform size 1500 μm is 0.5 m in diameter and 0.5 m high. In packed bed state, the porosity may be taken as 0.4. Ergun's equation for the above fluid-particle system (in SI units) is given below : Δ P/L = 375 × 10 3 VOM + 10.94 × 10 6 V2 OM (SI units) If water is to be used as the fluidising medium, the minimum fluidisation velocity, VOM is (A) 12 mm/s (B) 16 mm/s (C) 24 mm/s (D) 28 mm/s

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Last Answer : (B) 16 mm/s

Fatty acids are a major energy source for the body. Which of the following statement(s) is/are true concerning the use of fatty acids as an energy source? a. Fatty acids are stored in adipocytes as triglycerides b. Hormone-sensitive lipase is present only in adipose tissue c. Fatty acids are released into the circulation traveling freely in plasma d. Approximately 25% of total nonprotein caloric needs supplied via total parenteral nutrition should be in the form of fat

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Now it was Ravi‘s turn. He rolled the dice. What is the probability that he got the sum of the two numbers appearing on the top face of the dice is less than or equal to 12? a. 1 b. 5/36 c. 1/18 d. 0

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Calculate the energy in an electric field with flux density 6 units and field intensity of 4 units. a) 12 b) 24 c) 36 d) 48

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Calculate the frequency at which the conduction and displacement currents become equal with unity conductivity in a material of permittivity 2. a) 18 GHz b) 9 GHz c) 36 GHz d) 24 GHz

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The length of lap in tension reinforcement should not be less than the bar diameter × (actual tension / four times the permissible average bond stress) if it is more than (A) 18 bar diameters (B) 24 bar diameters (C) 30 bar diameters (D) 36 bar diameters

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P, Q and R can do a piece of work in 18,24 and 36 days on the second day and P on the third day, again R on the fourth day and so on. Then in how, many days will the work be completed? 1. 25 2. 24 3. 22 4. 20 5. 26

Description : P, Q and R can do a piece of work in 18,24 and 36 days on the second day and P on the third day, again R on the fourth day and so on. Then in how, many days will the work be completed? 1. 25 2. 24 3. 22 4. 20 5. 26

Last Answer : 2;

If the average total cost is Rs. 54, total fixed cost is Rs. 45000 and quantity produced is 2500 units, find the average variable costs (in Rs.) of the firm : (1) 24 (2) 18 (3) 36 (4) 60

Description : If the average total cost is Rs. 54, total fixed cost is Rs. 45000 and quantity produced is 2500 units, find the average variable costs (in Rs.) of the firm : (1) 24 (2) 18 (3) 36 (4) 60

Last Answer : 36