64.

65.

66.

61.

68.

70.

71.

72.

In SI system of units, One tonne of refrigeration is taken as equivalent to :
(A) 210 kJ/min (B) 2100 kJ/min
(Cc) 307 (D) 35 kW

‘Two stroke engines as compared to four stroke engines having same output rating and same
compression ratio have :

(A) Higher overall efficiency (B) Lower mechanical efficiency

(C) Lower thermal efficiency (D) Higher weight to power ratio
A closed gas turbine works on :

(A) Stirling cycle (B) Carnot cycle

(C) Rankine cycle ൩) Joule cycle
The head against which a centrifugal pump has to work is known as :

(A) Static head (8) Total head

(C) Net positive suction head (D) Manometric head

The hydraulic efficiency of an impulse turbine is maximum when :
(ಗಿ) The velocity of the wheel is half the velocity of the jet of water at inlet
(B) The velocity of the wheel is double the velocity of the jet of water at inlet
(C) The velocity of the wheel is equal to the velocity of the jet of water at inlet
(D) The velocity of the wheel is three fourth of the velocity of the jet of water at inlet

The power transmitted by the belt is maximum when the maximum tension in the belt is :
(A). Equal to the centrifugal tension (B) Two times the centrifugal tension
(C) Three times the centrifugal tension (D) Four times the centrifugal tension

Bevel gears are used to transmit rotary motion between two shafts whose axes are :
(A) Non-intersecting and non parallel
(ए) Parallel and coplanar
(0) Non-coplanar
(0) Non-parallel or intersecting but coplanar

In levelling, the reading is taken on a staff held at a point of known elevation of 123.45 m,
the staff reading is recorded as 1.875 m. The height of instrument is :

(ಗ) 1.875 m (B) 121.575 m

(0) 123.45 m (0) 125.325 m

According to IS;1904-1986, the minimum depth of foundation below natural ground surface
should be :
(A) 600 mm (B) 450mm
(0) 500mm @) 750mm
11 005/2016
൬൩.0)