NORTH
 Q943
 J62
 J7
 JT32
 AKT7
 AQ
 962
 K864
  J862
 853
 QT853
 7
  5
 KT974
 AK4
 AQ95
Dealer: East    Vul: NS   MP Scoring

West

X
2
Pass

North

Pass
3

East
Pass
1
Pass

South
1
2
Pass

 Delayed Support 

North at first turn had the option of directly raising South here at unfavourable vulnerability and opted not to.
When South rebid 2 opposite a now passed North, would extra values be required?
What is a minimum for such a bid? Just a fifth card in the suit?
What would a maximum be?

West's 2 bid suggested South short in the suit.
Was North's Q943 better on defence?

If North instead of  Q943  J62 held  9432  QJ6 what might be the best contract for a declarer looking at:
NORTH
 9432
 QJ6
 J7
 JT32
   5
 KT974
 AK4
 AQ95