10 Questions

Questions and Answers

- 1.A bulb in a staircase has two switches, one switch being at the ground floor and the other one at the first floor. The bulb can be turned ON and also can be turned OFF by any one of the switches irrespective of the state of the other switch. The logic of switching of the bulb resembles.
- A.
An AND gate

- B.
An OR gate

- C.
An XOR gate

- D.
A NAND gate

- E.
Either 1 or 3

- 2.Consider a vector field . The closed loop line integral can be expressed as
- A.
- B.
- C.
- D.
- E.
None Of these

- 3.If x= then the value of is
- A.
- B.
- C.
- D.
1

- E.
0

- 4.In the Circuit shown below , current through the inductor is
- A.
- B.
- C.
- D.
- E.
1+j A

- 5.A System has with transfer function is excited by sin(t ). The steady state output of the system is Zero at =
- A.
1 Rad/sec

- B.
2 Rad/sec

- C.
3 Rad/sec

- D.
4 Rad/sec

- E.
5 Rad/sec

- 6.In IC technology, dry oxidation (using dry oxygen) as compared to wet oxidation (using steam or water vapor) produces
- A.
Superior quality oxide with a higher growth rate

- B.
Inferior quality oxide with a higher growth rate

- C.
Inferior quality oxide with a lower growth rate

- D.
Superior quality oxide with a lower growth rate

- E.
None of These

- 7.The maximum value of until which the approximation sin holds to within 10% error is
- A.
10 degree

- B.
18 degree

- C.
15 degree

- D.
22 degree

- E.
100 degree

- 8.The impulse response of a system is h(t) = tu(t). For an input u(t − 1) , the output
- A.
- B.
- C.
- D.
- E.
None of these

- 9.In the circuit shown below what is the output voltage ( ) out V if a silicon transistor Q and an ideal op-amp are used?
- A.
-15 V

- B.
-0.7 V

- C.
7 V

- D.
0.7 V

- E.
15 V

- 10.Consider a delta connection of resistors and its equivalent star connection as shown below. If all elements of the delta connection are scaled by a factor k, k> 0, the elements of the corresponding star equivalent will be scaled by a factor of
- A.
K

- B.
K/2

- C.
8/k

- D.
1/K

- E.
K/3