Complete the sequence: ab_ bc_ c_b a_c.
(a) baac (b) aabb (c) caab (d) aaab Solution: Given sequence is ab_ bc_ c_b a_c. The pattern is abc... View Article
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How many factors of 7560 are perfect square?
Solution: The factors of 7560 are 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18,... View Article
What is the equivalent decimal of binary number 101110.
Solution: Given binary number is 101110. To convert binary number to decimal, multiply each digit of the binary number by... View Article
Convert the following decimal into binary (a) 158 (b) 27.5.
Solution: (a) Given number is 158. To convert a decimal number to binary, we divide it successively by 2, until... View Article
Square root of 363
(a) 3√11 (b) 11√3 (c) 11√2 (d) none of these Solution: We have to find the square root of 363.... View Article
Determine the value of c such that the line joining (0,3), (5,-2) is a tangent to the curve y = c/(x+1).
(a) 4 (b) 3 (c) 23 (d) 1 Solution: Given y = c/(x+1) dy/dx = -c/(x+1)2 m = (y2-y1)/(x2-x1) =... View Article
Write USD 11,800.00 (Dollars) in words.
Solution: We can write 11,800.00 Dollars as eleven thousand eight hundred Dollars.
Find the 68th multiple of 89, if the 69th multiple is 6141.
(a) 6230 (b) 5963 (c) 6052 (d) none of the above Solution: Given that 69th term = 6141 Common difference... View Article
What is 6% of 10000.
(a) 100 (b) 60 (c) 600 (d) 1000 Solution: 6% of 10000 = (6/100)10000 = 600 Hence option c is... View Article
Two amplifiers are connected one after another in series. The first amplifier has a voltage gain of 15 and the second has a voltage gain of 20. If the input signal voltage is 0.3 V, the output signal voltage is
Two amplifiers are connected one after another in series. The first amplifier has a voltage gain of 15 and the... View Article
Three rods of same dimensions have thermal conductivities k, 2k, and 3k. they are arranged as shown in figure with their ends at 100ºc, 40ºc and 0ºc. The temperature of the junction is
Three rods of the same dimensions have thermal conductivities of 3k, 2k and k. They are arranged as shown in... View Article
What is the frequency heard by the observer in Hz?
A whistle giving out 450 Hz approaches a stationary observer at a speed of 33 ms−1. We know that thevelocity... View Article
The correct explanation for the observation is possible by using
A piece of iron is heated in a flame. It first becomes dull red then becomes reddish yellow and finally... View Article
What is the change in the energy of the inductance?
The self-induced emf of a coil is 25 volts. When the current in it is changed at a uniform rate... View Article
If the ratio of intensity of wave from two coherent sources is 4, then the visibility of the fringes is
If the ratio of the intensity of wave from two coherent sources is 4, then the visibility of the fringes... View Article
Which of the following is true?
An electron is projected with uniform velocity along the axis of a current-carrying long solenoid. Which of the following is... View Article
An electromagnetic wave going through a vacuum is described by E=E0sin(kx−ωt); B=B0sin(kx−ωt).
Which of the following equation is true?
a) E0k = B0ω b) E0ω = B0k c) E0B0 = ωk d) None of these Answer: a) E0k = B0ω Solution: E0/B0 =... View Article
A full-wave rectifier is used to convert n-Hz A.C into D.C., then the number of pulses per second present in the rectified voltage is.
a) n b) n/2 c) 2n d) 4n Answer: 2n Solution:
A charged spherical conductor has potential of 6V and its radius is 2m. The electric intensity at its centre is :
a) zero b) 3 N/C c) 12 N/C d) none of the above Answer: a) zero Solution: Electric intensity inside... View Article
A 10g bullet is fired at a plank of wood with a speed of 200ms−1. After passing through the plank, which is 1m thick, the speed of the bullet reduces to 100ms−1. Find the average resistance offered by the plank.
Answer: 150 N Solution: Using v2=u2 −2as and putting v=100m/s, u=200m/s and s=1m we get retardation a=1.5×104 m/s2 so average... View Article
