Kerala **PSC** Lecturer Grade-I Rural Engineering Provisional Answer Key is out. PSC has conducted the written examination on December 19, 2020, against the notification for Lecturer Grade I- Rural Engineering, in Rural Department (cat No: 065/ 2015). If any candidates have any Complaints regarding Answer Key should be submitted online only through the OTR Profile of Candidates, within a period of 5 days from the date of publication of Provisional Answer Key. Let’s check some the question paper & provisional answer key of the Rural Engineering Lecturer.

kerala PSC EXAM CALENDAR MARCH 2021

**Kerala PSC Lecturer Grade-I Rural Engineering Answer Key**

Some of the questions asked in the Lecturer Grade-I in Rural Engineering (Cat No: 68/2015) written exam is:

- Let A be a non-singular matrix of order 4. Then det(Adj A) is equal to

A) |A| B) |A|² C) |A|³ D) 4|A| - The coefficient of rᵗʰ and (r + 1)ᵗʰ terms in the expansion of (1 + x)²⁰ are in the ratio 1 : 2, value of r

A) 7 B) 6 C) 5 D) 8 - The value of tan 225° cot 400° + tan 675° cot 315°

A) 2 B) 1 C) –1 D) 0 - The function f(x) = x³ – 3x² + 4x

A) Strictly increasing in (–∞, ∞) B) Strictly decreasing in (–∞, ∞) C)Increasing in (–∞, 0), decreasing in [0, ∞)

D) Decreasing in (–∞,0), increasing in [0, ∞) - The derivative of cos⁻¹(sin x) concerning x

A) sin⁻¹ (cos x) B) x C) 1 D) –1 - Low heat cement contains

A) Small percentage of aluminium sulphate and the high percentage of lime

B) Small percentage of lime and gypsum

C) High percentage of aluminium sulphate and a small percentage of gypsum

D) Small percentage of tricalcium aluminate and a high percentage of dicalcium silicate - The minimum depth of foundation given by Rankine’s formula, for the soil of safe bearing capacity of 18 tonnes/sq.m, density 2000 kg/m³ and angle of repose of the soil 30° is

A) 1.50 m B) 1.00 m C) 1.20 m D) 1.80 m - The length of a line measured with a 20 m chain was found to be 300 m. It was afterwards found that the chain was 0.04 m too long. The true length of the line is

A) 300.04 m B) 299.96 m C) 300.60 m D) 300.06 m - A line of the level was run from benchmark ‘A’ of reduced level 100.854 to a benchmark ‘B’ of reduced level 102.652. If the sum of back sights was 2.190 and foresight 0.400, then closing error of levelling work is:

A) – 0.008 m B) – 3.588 m C) – 0.006 m D) – 0.004 m - Which of the following is true for a 4 stroke SI engine concerning the camshaft speed?

A) Same as crankshaft speed B) Half the crankshaft speed C) Three times the crankshaft speed D) Twice the crankshaft speed - Which of the following is not an engine part?

A) Gudgeon pin B) Camshaft C) Differential D) Manifolds - The octane number of a fuel is calculated by comparing the knocking with a mixture of

A) Isooctane and normal hectane B) Isooctane and normal cetane C) Iso hectane and normal octane

D) Isooctane and normal heptane - If the torque due to brake load is 200 KNm and the engine speed is 600 rpm, the brake power developed in metric HP is

A) 25.1 HP B) 22.7 HP C) 17.07 HP D) 8.1 HP - Choose the correct combination.

A) Pelton turbine-High head high discharge, Francis turbine-Low head low discharge

B) Pelton turbine-Tangential flow, Francis turbine-Axial flow

C) Pelton turbine-High head low discharge, Francis turbine-Medium head medium discharge

D) Pelton turbine-Axial flow, Francis turbine-Mixed flow - If the value of the power factor in an A.C. circuit is unity. The load is

A) Inductive B) Capacitive C) Resistive D) Inductive or Capacitive

**Download the PSC Lecturer Grade I- Rural Engineering question paper free pdf**:

RURAL ENGINEERING LECTURER QUESTIONs pdf download

### Lecturer Grade-I Rural Engineering Provisional Answer Key

- |A|³
- 7
- 2
- Strictly increasing in (–∞, ∞)
- -1
- A small percentage of tricalcium aluminate and a high percentage of dicalcium silicate
- 1.00 m
- 300.60 m
- – 0.008 m
- Half the crankshaft speed
- Differential
- Iso octane and normal heptane
- 17.07 HP
- Pelton turbine-High head low discharge, Francis turbine-Medium head medium discharge
- Resistive

Click here to download the Provisional Answer Key:

LECTURER GRADE-I ANSWER KEY pdf download

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