Civil Engineering MCQJE Level Civil Engineering
RRB-style calculation: A machine has mechanical advantage 12 and velocity ratio 20. Its efficiency is:
Structural AnalysisMechanics, Strength of Materials and Structural AnalysisHARD
Choose the correct answer
A
60 %
B
240 %
C
320 %
D
166.7 %
Correct Answer
A. 60 %
AI Detailed Explanation & IS Code Reference
Unlock the reasoning, formula path and code-linked notes inside your student dashboard.
Efficiency = MA/VR x 100 = 12/20 x 100 = 60.0%.
ScoreCardAI links this solution with subject, topic and difficulty signals so your scorecard can identify weak areas after a full mock test.
Concept shortcut
IS/IRC reference
Common trap
Practice more Civil Engineering questions
This MCQ belongs to RRB JE Civil & Allied Engineering CBT-2 Full Mock Test Series. Full tests include timed attempts, rank comparison and subject-wise analysis.