4-33. Which   of   the   following   tools   are used  to  cut  heavy  sheet  metal? 1.   Nippers 2.   Clamp   pliers 3.   Slip-joint   pliers 4.   Tinner's   bench   shears 4-34. A   metal   shearing   machine   is normally   operated   by   which   of   the following   sources   of   power? 1.   Electrical 2.   Hydraulic 3.   Foot 4.   Magnetic 4-35. The   shear   blades   on   metal   shearing machines   are   normally   what   length? 1. 36   inches 2. 42   inches 3. 51   inches 4. 73   inches 4-36. Metal   shearing   machines   will normally   cut   iron   up   to   what maximum   thickness? 1. 1 / 2    i n c h 2. 1 / 8    i n c h 3. 1/16   inch 4. 1/32   inch 4-37. Cutting   nippers   normally   come   in what maximum length? 1. 10   inches 2. 12   inches 3. 14   inches 4. 15   inches 4-38. Taps   are   used   for   which   of   the following   purposes? 1.   For   cutting   external   threads 2.   For   bending   or   shaping   metal 3.   For   cutting   internal   threads 4.   For   removing   rust   from   cylinder heads 4-39. Dies   are   used   for   which   of   the following   purposes? 1. For   cutting   internal   threads 2.   For   removing   paint   from   metal parts 3.   For   sealing   containers 4.   For   cutting   external   threads 4-40. Taps  are  made  from  which  of  the following   materials? 1.   Hardened   steel 2. Plastic 3.   Copper 4.   Leather 4-41. Which   of   the   following   tools   is used   to   start   tapping   operations? 1.   A   taper   hand   tap 2.   A   rethreading   die 3.   A   scratch   awl 4.   A   three-square   file 4-42. Pipe   taps   have   tapered   diameters that   increase   at   what   rate? 1. 1/2   inch   per   foot 2. 3/4   inch   per   foot 3. 7/8   inch   per   foot 4. 1   inch   per   foot 4-43. What   are   the   two   types   of   boiler taps? 1.  Bent  and  straight 2.   Straight   and   tapered 3.  Round  and  square 4.  Hard  and  soft 4-44. Straight   boiler   taps   range   in   size from  1/2  inch  to  what  maximum diameter? 1. 1 1/2   inch 2. 2    3/4   inches 3. 3   1/4   inches 4. 4   3/8   inches 4-45. A  mud  or  washout  tap  has  what  total number   of   flutes? 1 .    S i x 2.   Eight 3.   Ten 4.   Twelve 2 2