Q. It takes two hours for a person X to mow the lawn. Y can mow the same lawn in four hours. How long (in minutes) will it take X and Y, if they work together to mow the lawn? (A) 60 (B) 80 (C) 90 (D) 120 Ans: 80 Solution: Work done by X […]
Q. The missing number in the given sequence 343, 1331,_______, 4913 is (A) 3375 (B) 2744 (C) 2197 (D) 4096 Ans: 2197 73,113, _____, 173 ∵ 7, 11, 13 and 17 are all prime numbers. The series is cube of these numbers.
The missing number in the given sequence 343, 1331,_, 4913 is Read More »
Q. The passengers were angry___________the airline staff about the delay. (A) on (B) about (C) with (D) towards Ans: with Solution: The sentence is describing the emotions of the passengers towards the airline staff due to a delay. The correct preposition to use in this context is “with.” When you are angry with someone, it
The passengers were angry___________the airline staff about the delay Read More »
Q. I am not sure if the bus that has been booked will be able to____________all the students. (A) sit (B) deteriorate (C) fill (D) accommodate Ans: (D) accommodate Solution: The correct answer is accommodate. The sentence should read: “I am not sure if the bus that has been booked will be able to accommodate
I am not sure if the bus that has been booked will be able to_________all the students Read More »
Q. The state transition diagram for the circuit shown is Ans: Option (C) Solution: Case 3: Q = 1 A = 0 NAND output = 1 NAND Q’ = 1 NAND 0 = 1 Qn+1 = 1
The state transition diagram for the circuit shown is Read More »
Q. In the circuit shown, the breakdown voltage and the maximum current of the Zener diode are 20 V and 60 mA, respectively. The values of 𝑅1 and 𝑅𝐿 are 200 Ω and 1 kΩ, respectively. What is the range of Vi that will maintain the Zener diode in the ‘on’ state? Ans: 24 V
Q. Two identical copper wires W1 and W2, placed in parallel as shown in the figure, carry currents I and 2I, respectively, in opposite directions. If the two wires are separated by a distance of 4r, then the magnitude of the magnetic field ⃗B→ between the wires at a distance r from W1 is Solution:
Q. A single bit, equally likely to be 0 and 1, is to be sent across an additive white Gaussian noise (AWGN) channel with power spectral density 𝑁0/2. Binary signaling, with 0 ↦ 𝑝(𝑡) and 1 ↦ 𝑞(𝑡), is used for the transmission, along with an optimal receiver that minimizes the bit-error probability. Let 𝜑1(𝑡),
Q. In the circuit shown, if 𝑣(𝑡) = 2 sin(1000 𝑡) volts, 𝑅 = 1 kΩ and 𝐶 = 1 𝜇F, then the steady-state current 𝑖(𝑡), in milliamperes (mA), is (A) sin(1000 𝑡) + cos(1000 𝑡) (B) 2 sin(1000 𝑡) + 2 cos(1000 𝑡) (C) 3 sin(1000 𝑡) + cos(1000 𝑡) (D) sin(1000 𝑡) +
Q. Consider the line integral ∫(𝑥𝑑𝑦 − 𝑦𝑑𝑥) 𝐶 the integral being taken in a counterclockwise direction over the closed curve 𝐶 that forms the boundary of the region 𝑅 shown in the figure below. The region 𝑅 is the area enclosed by the union of a 2 × 3 rectangle and a semi-circle of
