## Kerala PSC Previous Years Question Paper & Answer

Title : Industries Extension Officer Industries And Commerce English
Question Code : A

Page:8

Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Industries Extension Officer Industries And Commerce English ' And exam conducted in the year 2019. And Question paper code was '067/2019'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.

page: 8 out of 14
Excerpt of Question Code: 067/2019

61. The current in a 5 nH inductor is given by 6£+3 A . What is the value of inductor voltage at

=8 sec?
(4) 9۵0۷ B) 30uv

62. When the charge on a capacitor is doubled, the energy stored, :
{A) increases by a factor of 2 (൫) increases by a factor of 4
{C) decreases by a factor of 4 (D) remains the same

68. When a p-n junction is reverse biased, :
(ಹ) holes and electrons move towards the junction
{B) holes and electrons move away from the junction
{C) movement of holes and electrons are seized
യ width of depletion region decreases

64. Inthe circuit given below, C, =8 F, C, =6 F and ۷ =4 V. Find the value of V:

⊏∢∁↥∣−∣ ‏نے‎
‎∣∣ ∣∣
+ 7 -
v
‏ل‎
‎@ ष By 4V
ര 12V D) 6V

65. A zener diode with high breakdown voltage has :
{A) both p and n regions are lightly doped
{B) both p and n regions are heavily doped
{C) either p or n regions is lightly doped
(2) none of the above

66. In a zener diode, the current is controlled by :
{A) potential barrier {B) reverse bias voltage
(@ external circuits (2) zener diode resistance

67. For resistance measurement using a digital multimeter, it contains :
வ High voltage source (3) Low current source
)0 High resistance (2) Low capacitance

67/2019 10 A