Q. A single-phase 100 kVA, 1000 V / 100 V, 50 Hz transformer has a voltage drop of 5% across its series impedance at full load. Of this, 3% is due to resistance. The percentage regulation of the transformer at full load with 0.8 lagging power factor is (A) 4.8 (B) 6.8 (C) 8.8 (D) […]
Q. P, Q, R and S crossed a lake in a boat that can hold a maximum of two persons, with only one set of oars. The following additional facts are available. i. The boat held two persons on each of the three forward trips across the lake and one person on each of the
Q. A designer uses marbles of four different colours for his designs. The cost of each marble is the same, irrespective of the colour. The table below shows the percentage of marbles of each colour used in the current design. The cost of each marble increased by 25%. Therefore, the designer decided to reduce equal
Q. A class of twelve children has two more boys than girls. A group of three children are randomly picked from this class to accompany the teacher on a field trip. What is the probability that the group accompanying the teacher contains more girls than boys? Ans: Option B Sol: ∵B=G+2 and B+G=12 ⇒ B=7,
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Q. In a certain code, AMCF is written as EQGJ and NKUF is written as ROYJ. How will DHLP be written in that code? (A) RSTN (B) TLPH (C) HLPT (D) XSVR Ans: HLPT
Q. An e-mail password must contain three characters. The password has to contain one numeral from 0 to 9, one upper case and one lower case character from the English alphabet. How many distinct passwords are possible? (A) 6,760 (B) 13,520 (C) 40,560 (D) 1,05,456 Ans: 40,560
Q. The three roots of the equation 𝑓(𝑥) = 0 are 𝑥 = {−2, 0, 3}. What are the three values of 𝑥 for which 𝑓(𝑥 − 3) = 0? (A) −5, −3, 0 (B) −2, 0, 3 (C) 0, 6, 8 (D) 1, 3, 6 Ans: 1, 3, 6
Q. “A common misconception among writers is that sentence structure mirrors thought; the more __________the structure, the more complicated the ideas.” The word that best fills the blank in the above sentence is (A) detailed (B) simple (C) clear (D) convoluted Ans: convoluted
Q. “Since you have gone off the__________, the___________sand is likely to damage the car.” The words that best fill the blanks in the above sentence are (A) course, coarse (B) course, course (C) coarse, course (D) coarse, coarse Ans: course, coarse
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Q. A band limited low-pass signal 𝑥(𝑡) of bandwidth 5 kHz is sampled at a sampling rate 𝑓𝑠. The signal 𝑥(𝑡) is reconstructed using the reconstruction filter 𝐻(𝑓) whose magnitude response is shown below: The minimum sampling rate 𝑓𝑠 (in kHz) for perfect reconstruction of 𝑥(𝑡) is . Ans: 13
A band limited low-pass signal 𝑥(𝑡) of bandwidth 5 kHz is sampled at a sampling rate 𝑓𝑠 Read More »
