# MCQs in Engineering Mechanics Part IV - Answers

Answers key for the Compiled MCQs in Engineering Mechanics Part 4 of the series as one topic in General Engineering and Applied Sciences (GEAS) in the ECE Board Exam.

Below are the answers key for the Multiple Choice Questions in Engineering Mechanics Part 4.

151. water

152. either of the above

153. equilibrant

154. 18 N at 246°

155. all of the above are correct

156. lie somewhere along the line symmetry

157. all of the above

158. B or C

159. all of the above

160. 2/5 mr2

161. 2/3 mr2

162. second moment of area

163. polar moment of area

164. Archimedes’ Principle

165. buoyancy

166. 7 N

167. tends to rise

168. acceleration

169. A or B

170. elastic collisions

171. 1 N-s

172. 10 N-s

173. impulse.

174. radians per second

175. mass moment of inertia x angular velocity

176. torque

177. Heisenberg uncertainty principle

178. m4

179. statically indeterminate

180. Torricelli’s equation

181. Vf 2 = Vi 2 + 2as

182. It is directed toward the center of the circular path.

183. changes the direction of the velocity.

184. changes the magnitude of the velocity.

185. Gforce

186. 1.211 x 1044 N

187. m3 kg-1 s-2

188. 1.02 x 10-67 N

189. 4 x 1014 m3 s-2

190. 1.6 m/s2

191. either of the above

192. none of the above

193. coefficient of rolling friction

194. 0.0002 – 0.0010

195. 0.01 – 0.015

197. classical mechanics

198. 110 N

199. 18

200. 8.67

### Online Questions and Answers in Engineering Mechanics Series

Following is the list of practice exam test questions in this brand new series:

Engineering Mechanics MCQs
PART 1: MCQs from Number 1 – 50                        Answer key: PART I
PART 2: MCQs from Number 51 – 100                   Answer key: PART II
PART 3: MCQs from Number 101 – 150                 Answer key: PART III
PART 4: MCQs from Number 151 – 200                 Answer key: PART IV
PART 5: MCQs from Number 201 – 250                 Answer key: PART V
PART 6: MCQs from Number 251 – 300                 Answer key: PART VI
PART 7: MCQs from Number 301 – 350                 Answer key: PART VII
PART 8: MCQs from Number 351 – 400                 Answer key: PART VIII

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