Free Printable Transcribed Worksheet Questions

1.

Raman is confident of speaking English ______ six months as he has been practising regularly ______ the last three weeks.

a)

during, for

b)

for, since

c)

for, in

d)

within, for

2.

In a huge pile of apples and oranges, both ripe and unripe mixed together, 15% are unripe fruits. Of the unripe fruits, 45% are apples. Of the ripe ones, 66% are oranges. If the pile contains a total of 5,692,000 fruits, how many of them are apples?

a)

2,029,198

b)

2,467,482

c)

2,789,080

d)

3,577,422

3.

If $P=3$ , $R=27$ , $T=243$ , then $Q+S=$ ______

a)

40

b)

80

c)

90

d)

110

4.

Two straight lines are drawn perpendicular to each other in the X–Y plane. If $\alpha$ and $\beta$ are the acute angles the straight lines make with the X-axis, then $\alpha+\beta$ is ______

a)

60°

b)

90°

c)

120°

d)

180°

5.

Consider the Boolean function $Z(a, b, c)$ . Which of the following minterm lists represents the circuit given above?

a)

$Z=\Sigma(0,1,3,7)$

b)

$Z=\Sigma(1,4,5,6,7)$

c)

$Z=\Sigma(2,4,5,6,7)$

d)

$Z=\Sigma(2,3,5)$

6.

There are five bags each containing identical sets of ten distinct chocolates. One chocolate is picked from each bag. The probability that at least two chocolates are identical is ______

a)

0.3024

b)

0.4235

c)

0.6976

d)

0.8125

7.

A low memory can be connected to a microprocessor by using ______

a)

INTR

b)

RESET IN

c)

HOLD

d)

READY

8.

The addressing mode used in an instruction of the form ADD X, Y is ______

a)

absolute

b)

immediate

c)

indirect

d)

index

9.

Fastest type of memory from the following list is

a)

tape

b)

Semiconductor memory

c)

disk

d)

bubble memory

10.

Transistor geometries in a CMOS inverter have been adjusted to meet the requirement for worst-case charge and discharge times for driving a load capacitor $C$ . This design is to be converted to that of a NOR circuit in the same technology, so that its worst-case charge and discharge times while driving the same capacitor are similar. The channel lengths of all transistors are to be kept unchanged. Which one of the following statements is correct?

a)

Widths of PMOS transistors should be doubled, while widths of NMOS transistors should be halved.

b)

Widths of PMOS transistors should be doubled, while widths of NMOS transistors should not be changed.

c)

Widths of PMOS transistors should be halved, while widths of NMOS transistors should not be changed.

d)

Widths of PMOS transistors should be unchanged, while widths of NMOS transistors should be halved.

11.

The value of an automatic variable that is declared but not initialized will be

a)

0

b)

-1

c)

garbage

d)

none of these

12.

Output of the following program fragment (in C) for (i = 1; i < 5; i++) if (i == 3) continue; else printf("%d", i);

a)

1 2 4 5

b)

1 2 4

c)

2 4 5

d)

none of these

13.

In C programming language, which of the following operators has the highest precedence?

a)

Unary +

b)

*

c)

≥

d)

==

14.

If $y = 2x^2 - 3x + 5$ , then the minimum value of $y - 2x$ is

a)

$\frac{15}{8}$

b)

$\frac{31}{8}$

c)

$-\frac{33}{8}$

d)

$-\frac{15}{8}$

15.

If $p$ and $q$ are the roots of $x^2 + x + 3 = 0$ , then $\dfrac{p^6 - q^6}{p^{-6} - q^{-6}}$ equals

a)

81

b)

27

c)

243

d)

-729

16.

Find the nature of roots of $4x^2 + 8x - 11 = 0$ .

a)

Real and equal

b)

Complex conjugates

c)

Conjugate surds

d)

Rational and unequal

17.

The greatest prime factor of $(3^{199} - 3^{196})$ is

a)

13

b)

17

c)

3

d)

11

18.

Illustration : clarity :: construction : ______

a)

wide

b)

upright

c)

softness

d)

narrow

19.

What is the minimum number of cuts required to cut a cube into 24 identical pieces?

a)

6

b)

8

c)

9

d)

4

20.

Consider the Earth to be a perfect sphere of radius $R$ . Then the surface area of the region, enclosed by the $60^\circ$ N latitude circle, that contains the north pole in its interior is ______.

a)

$(2-\sqrt{3})\pi R^2$

b)

$(\sqrt{3}-1)\pi R^2$

c)

$\pi R^2$

d)

$(2-\tfrac{\sqrt{2}}{2})\pi R^2$

21.

The time constant of the network shown in the figure is. The circuit has a series resistor R from a DC source, then a node that splits to a vertical resistor labeled 2R to ground and to the right into a capacitor C to ground.

a)

2RC

b)

3RC

c)

RC/2

d)

2RC/3

22.

The current I in the circuit shown is. The circuit is a series path from a 5 V source through three resistors labeled 2 kΩ, 2 kΩ, and 2 kΩ, with a rightmost current meter indicating I.

a)

1.25 × 10^-3 A

b)

$0.75 \times 10^{-3} A$

c)

$0.5 \times 10^{-3} A$

d)

$1.16 \times 10^{-3} A$

23.

Consider a real-valued baseband signal x(t) band-limited to 10 kHz. The Nyquist rate for the signal y(t) = x(t) x[1 + t/2] is

a)

15 kHz

b)

30 kHz

c)

60 kHz

d)

20 kHz

24.

The Fourier transform X(jω) of the signal x(t) = $t/(1 + t^2)^2$ is

a)

$(\frac{\pi}{2j})\omega e^{-|\omega|}$

b)

$(\frac{\pi}{2}) \omega e^{-|\omega|}$

c)

$(\frac{\pi}{2}) e^{- |\omega|}$

d)

$(\frac{\pi}{2j})e^{-|\omega|}$

25.

What is the Laplace transform of x(t) = $e^{2t}$ u(t) ∗ t u(t)?

a)

$-1/[s^2 (s + 2)]$

b)

$-1/[s^2 (s − 2)]$

c)

$\frac{1}{s^2 (s - 2)}$

d)

$\frac{1}{s^2 (s + 2)}$

26.

Consider the two-port network shown. Determine the admittance parameters y11, y12, y21, y22 in siemens.

a)

y11 = 2, y12 = −4, y21 = −4, y22 = 2

b)

y11 = 1, y12 = −2, y21 = −1, y22 = 3

c)

y11 = 2, y12 = −4, y21 = −1, y22 = 2

d)

y11 = 2, y12 = −4, y21 = −4, y22 = 3

27.

A single-crystal intrinsic semiconductor is at a temperature of 300 K with effective density of states for holes twice that of electrons. The thermal voltage is 26 mV. The intrinsic Fermi level is shifted from the mid-gap energy level by

a)

18.02 meV

b)

9.01 meV

c)

13.45 meV

d)

26.90 meV

28.

The threshold voltage of an n-channel MOSFET can be increased by

a)

increasing the channel doping concentration

b)

reducing the channel doping concentration

c)

reducing the gate oxide thickness

d)

reducing the channel length

29.

Consider the circuit with an ideal operational amplifier. Assuming |V_in| ≪ |V_CC| and |V_ref| ≪ |V_CC|, the condition at which V_out equals zero is

a)

V_in = V_ref

b)

V_in = 0.5 V_ref

c)

V_in = 2 V_ref

d)

V_in = 2 + V_ref

30.

For the BJT amplifier shown, V_BE = 0.7 V, kT/q = 26 mV. Assume the BJT output resistance r_o is very high and the base current is negligible. The capacitors are short-circuited at signal frequencies, and the input v_i is DC-coupled. The low-frequency voltage gain v_o/v_i of the amplifier is

a)

−89.42

b)

−128.21

c)

−178.85

d)

−256.42

31.

Consider the 2-bit multiplexer shown. For the output to be the XOR of inputs C and D, the values for A0, A1, A2 and A3 are

a)

A0 = 0, A1 = 0, A2 = 1, A3 = 1

b)

A0 = 1, A1 = 0, A2 = 1, A3 = 0

c)

A0 = 0, A1 = 1, A2 = 1, A3 = 0

d)

A0 = 1, A1 = 1, A2 = 0, A3 = 0

32.

The characteristic equation of a T flip-flop is

a)

$Q^+ = T Q̄ + T̄ Q$

b)

$Q^+ = T Q̄ + Q T̄$

c)

$Q^+ = T Q$

d)

$Q^+ = T̄ Q̄$

33.

The frequency response |H(f)| of a linear time-invariant system has magnitude shown as a rectangular passband of unit gain from −α to α Hz and zero elsewhere. Consider the statements: • Statement I: The system is necessarily a pure delay system for inputs band-limited to −α ≤ f ≤ α. • Statement II: For any wide-sense stationary input process with power spectral density S_X(f), the output power spectral density S_Y(f) obeys S_Y(f) = S_X(f) for −α ≤ f ≤ α. Which one of the following combinations is true?

a)

Statement I is correct, Statement II is correct

b)

Statement I is correct, Statement II is incorrect

c)

Statement I is incorrect, Statement II is correct

d)

Statement I is incorrect, Statement II is incorrect

34.

Consider an even polynomial p(s) given by p(s) = $s^4 + 5 s^2 + 4 + K$ , where K is a real parameter. The complete range of K for which p(s) has all its roots on the imaginary axis is

a)

−4 ≤ K ≤ 9/4

b)

−3 ≤ K ≤ 9/2

c)

−6 ≤ K ≤ 5/4

d)

−5 ≤ K ≤ 0

Transcribed Worksheet Questions

Total questions: 34

Worksheet time: 1hrs 25mins

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