Kerala PSC Previous Year Question Paper
1.If A and B are symmetric matrices, then
(a) A + B is symmetric (b) A + B is skew symmetric
(c) A + B is identity (d) None of these
- What is the slope of the straight line perpendicular to the straight line 3x-4y+12=0?
(a) ¾ Et) 4/3 (c) -4/3:(d) -3/4
- What is the slope of the parabola y = x2 at the point (2, 4) ?
(a)4 (b)2 (c)1 (d)0
- When a brick is cut off length wise, the cut out bricks are called
(a) Queen closer (b) King closer (c) Corbel (d) Bat
- While laying bricks in a wall, frog of the brick must be kept
(a) Sideward (b) Downward (c) Upward (d) In any position
- Metallic tapes are made of
(a) Steel (b) Cloth and Wires (c) Invar (d) Nickel
- The line of collimation method of reduction of levels, does not provide a check on
(a) Reduced Levels (b) Back Sights (c) Fore Sights (d) Intermediate Sights
- A Total Station measures
(a) Co-ordinates alone
(b) Slope distance and horizontal distance
(c) Co-ordinates and horizontal distance
(d) Vertical, horizontal angles and slope distance
- The excess energy developed during power stroke in an engine is stored by
(a) Governor (b) Flywheel (c) Crank shaft (d) Piston
- The function of a differential is to
(a) Connect two rear wheels in correct alignment
(b) Receive power from the engine and to transmit to the rear wheels
(c) Absorb shocks and keeps the stability of the vehicle
(d) Provide relative motion to the two rear wheels when the vehicle is taking a turn
- A condenser in a steam power plant is used to
(a) Generate steam (b) Increase pressure
(c) Exchange the heat of low pressure steam to the cooling medium
(d) Convert heat energy of steam to mechanical energy
12.Which power plant is more efficient ?
(a) Hydro-electric power plant (b) Nuclear power plant
(c) Thermal power plant (d) Diesel power plant
- Voltage applied across 40W lamp is halved. Power consumed by this lamp at this voltage is
(a)20W (b)10W (c)40W (d) 5W
- Which of the following statement associated with purely inductive circuit is True ?
(a) Current lead the voltage by 90°
(b) Current is in phase with voltage
(c) Power factor unity (d) Average power zero
- R L C series circuit will resonate, if
(a) XL > XC (b) XL < XC (c) XL = XC (d) XL= 1/XC
- Energy consumed by 750 W electric iron for 6 minutes is
(a) 0.075 kWh (b)0.45 kWh (c)4.5 kWh (d) 0.75 kWh
- Permiance of a magnetic circuit is given by reciprocal of
(a) Permeability (b) Flux density (c) Reluctivity (d) Reluctance
- Which colour is emitted by an LED when the semiconductor material Gallium Arsenide phosphide is used ?
(a) Yellow (b) Red (c) Green (d) Blue
- Name the sensor which is used to detect the presence of near by objects without any physical contact with the object.
(a) Limit Switch (b) Relay (c) Proximity Switch (d) DPDT
- The program for a microcontroller is stored in its
(a) ROM (b) RAM (c) CPU (d) None of the above
Answers-
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| a | c | a | a | c | b | d | d | b | d |
| 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| c | a | b | d | c | a | d | b | c | a |
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