Comprehensive Viva - Why many are getting less marks

Why many of them are not getting good marks in Comprehensive Viva?

• Lack of basics
• Don't know about units (Example: Velocity, Bending Moment)
• Don't know conversions (Example:  1'-9" = ? meters)
• Don't know what they learnt in the core subjects (Example: FM, GT-I)  (check) 
• Lack of knowledge about Evaluation   (check)
• Lack of interest in reading books
• Not having text books
• Not having Handbooks like 1) Indian Practical Civil Engineers by P N Khanna 2) Civil Engineering Handbook by R Agor 3) GATE or IES Preparation books
• Repeatedly requesting faculty for more marks rather than studying
• Blaming college and staff instead of Self-Learning
• Lack of proper dress code and discipline while attending viva voce

Looking for solution??

• Stop worrying
• Have a Patience
• Start Reading books
• Have a discussion on subject in groups
• Practice Time Management