# MCQ on Basics of Engineering

**MCQ on Basics of Engineering**

**1-The center of gravity of a triangular lamina of base ‘b’ and height ‘h’ lies at a height of**

(A) (2/3)h from the base

(B) (1/4)h from the base

(C) (1/2)h from the base

(D) (1/3)h from the base

**2-In the breakdown region, Zener diode behaves like a ___ source.**

(A) Constant voltage

(B) Constant current

(C) Constant resistance

(D) Constant power

**3-Chromium is a**

(A) Heavy metal

(B) Heavy solid

(C) Light ion

(D) Heavy ion

**4-The moment of inertia of a square lamina of side 30 cm about its edges is**

(A) 3.7 x 10^{5} cm^{4}

(B) 4.7 x 10^{5} cm^{4}

(C) 1.7 x 10^{5} cm^{4}

(D) 2.7 x 10^{5} cm^{4}

**5-The element that has the biggest size in a transistor is **

(A) Collector

(B) Base

(C) Emitter

(D) PN junction

**6-Most hazardous metal pollutant of automobile exhaust is**

(A) Cd

(B) Hg

(C) Pb

(D) Cu

**7-A car is moving with velocity of 15 m/s. The car is brought to rest after application of brakes in 5 seconds. The retardation is**

(A) 10 m/s^{2}

(B) 5 m/s^{2}

(C) 3 m/s^{2}

(D) 1 m/s^{2}

**8-A car acceleration on a horizontal road due to the force exerted by**

(A) the engine of the car

(B) the driver of the car

(C) the earth

(D) the road

**9-The control charts used for the fraction of defective items in a sample is**

(A) Range chart

(B) P-chart

(C) Mean chart

(D) C-chart

**10-When the radial distance is ‘r’ the linear acceleration ‘a’ and angular acceleration ‘****α’ are related as follows**

(A) a = r^{2}α

(B) a = r^{3}α

(C) a = rα

(D) a = r^{4}α

**ANSWERS:**

**1-(D), 2-(A), 3-(A), 4-(D), 5-(A), 6-(C), 7-(C), 8-(D), 9-(B), 10-(C)**