MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 112 Mcqs, each offering curated multiple-choice questions to sharpen your Uncategorized topics knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
The is a mixture of cement and sand, the usual proportion being 1:3. |
| A. | mortar |
| B. | slurry |
| C. | gunite |
| D. | concrete |
| Answer» D. concrete | |
| 52. |
The sun shines on a 150 m2 road surface so it is at 45 C. Below the 5cm thick asphalt(average conductivity of 0.06 W/m K), is a layer of rubbles at 15 C. Find the rate of |
| A. | 5300 w |
| B. | 5400 w |
| C. | 5500 w |
| D. | 5600 w |
| Answer» C. 5500 w | |
| 53. |
A steel cylinder which is pushed in the soft soil is determined as |
| A. | jar born |
| B. | shield |
| C. | rod |
| D. | pole |
| Answer» C. rod | |
| 54. |
12 W/m K Thermal diffusivity = 5.16 * 10 -7 m2/s |
| A. | 43.07 hours |
| B. | 53.07 hours |
| C. | 63.07 hours |
| D. | 73.07 hours |
| Answer» B. 53.07 hours | |
| 55. |
Which of the following is called as non- mechanical waves? |
| A. | magnetic waves |
| B. | electromagnetic waves |
| C. | electrical waves |
| D. | matter waves |
| Answer» C. electrical waves | |
| 56. |
5 kW/m2. Determine the wavelength of emission maximum |
| A. | 8.46 micron m |
| B. | 7.46 micron m |
| C. | 6.46 micron m |
| D. | 5.46 micron m |
| Answer» E. | |
| 57. |
The SI units for torsion is |
| A. | n m |
| B. | n |
| C. | n/m |
| D. | m |
| Answer» B. n | |
| 58. |
Any wave function can be written as a linear combination of |
| A. | eigen vectors |
| B. | eigen values |
| C. | eigen functions |
| D. | operators |
| Answer» D. operators | |
| 59. |
Torsion is denoted by |
| A. | r |
| B. | q |
| C. | t |
| D. | n |
| Answer» D. n | |
| 60. |
torsion is produced when twisting couple coincides with the axis of the shaft. |
| A. | exact |
| B. | pure |
| C. | nominal |
| D. | mild |
| Answer» C. nominal | |
| 61. |
The unit of absorptive power is |
| A. | t |
| B. | ts-1 |
| C. | ts |
| D. | no unit |
| Answer» E. | |
| 62. |
Torque is moment. |
| A. | twisting |
| B. | shear |
| C. | bending |
| D. | couple |
| Answer» B. shear | |
| 63. |
Thermal damping is given by the equation D = (T-t/T) x 100. Here, T denotes |
| A. | outside temperature range |
| B. | inside temperature range |
| C. | total outside and inside temperature range |
| D. | thickness |
| Answer» B. inside temperature range | |
| 64. |
The cathode of transmission electron microscope consists of a |
| A. | tungsten wire |
| B. | bulb |
| C. | iron filament |
| D. | gold wire |
| Answer» B. bulb | |
| 65. |
The process of direct transmission of heat through a material is known as |
| A. | conduction |
| B. | radiation |
| C. | thermal insulation |
| D. | thermal energy |
| Answer» B. radiation | |
| 66. |
The resolving power of TEM is derived from |
| A. | electrons |
| B. | specimens |
| C. | power |
| D. | ocular system |
| Answer» B. specimens | |
| 67. |
5 cm in diameter, through which 400 W of electric energy is deposited. Assume the surface emissivity to be 0.9 and neglecting incoming radiation, find the rod surface temperature? |
| A. | 700k |
| B. | 800k |
| C. | 900k |
| D. | 1000k |
| Answer» E. | |
| 68. |
During TEM, a vacuum is created inside the |
| A. | room of operation |
| B. | specimen |
| C. | column |
| D. | ocular system |
| Answer» D. ocular system | |
| 69. |
The expansion and contraction joints generally consist of some elastic material, known as which should be compressible, rigid, cellular and Resilient. |
| A. | keys |
| B. | joint filler |
| C. | keys |
| D. | fillers |
| Answer» C. keys | |
| 70. |
As the wavelength of the radiation decreases, the intensity of the black body radiations |
| A. | increases |
| B. | decreases |
| C. | first increases then decrease |
| D. | first decreases then increase |
| Answer» D. first decreases then increase | |
| 71. |
Which of the following is known as Re- entrant mouthpiece? |
| A. | external mouthpiece |
| B. | convergent mouthpiece |
| C. | internal mouthpiece |
| D. | cylindrical mouthpiece |
| Answer» D. cylindrical mouthpiece | |
| 72. |
Amorphous solids have structure. |
| A. | regular |
| B. | linear |
| C. | irregular |
| D. | dendritic |
| Answer» D. dendritic | |
| 73. |
The walls of a particle in a box are supposed to be |
| A. | small but infinitely hard |
| B. | infinitely large but soft |
| C. | soft and small |
| D. | infinitely hard and infinitely large |
| Answer» E. | |
| 74. |
The Energy of the particle is proportional to |
| A. | n |
| B. | n-1 |
| C. | n2 |
| D. | n-2 |
| Answer» D. n-2 | |
| 75. |
6 BURGER VECTORS, STACKING FAULTS - ROLE OF |
| A. | increase in strength |
| B. | decrease in strength |
| C. | increase or decrease in strength depending on dislocation density |
| D. | don t affect strength of metal |
| Answer» D. don t affect strength of metal | |
| 76. |
The Cd value for internal mouthpiece running free is |
| A. | 0.6 |
| B. | 0.5 |
| C. | 0.7 |
| D. | 0.8 |
| Answer» C. 0.7 | |
| 77. |
Positive edge dislocation is denoted by |
| A. | |
| B. | |
| C. | |
| D. | |
| Answer» D. | |
| 78. |
Thermal insulation of roofs can be obtained by covering the top exposed surface of the roof with |
| A. | 2.5 cm thick layer of mud mortar |
| B. | 2.5 cm thick layer of coconut pitch cement concrete |
| C. | 7.5 cm thick layer of mud mortar |
| D. | 7.5 m thick layer of coconut pitch cement concrete |
| Answer» C. 7.5 cm thick layer of mud mortar | |
| 79. |
Dislocation density can vary from |
| A. | 105 1012 cm-2 |
| B. | 105 1012 m-2 |
| C. | 108 1010 cm-2 |
| D. | 106 1010 cm-2 |
| Answer» B. 105 1012 m-2 | |
| 80. |
Bimetallic strips contain as a metal. |
| A. | muntz metal |
| B. | yellow brass |
| C. | bronze |
| D. | aluminum |
| Answer» C. bronze | |
| 81. |
For an object other than a black body, it s emissivity, e is |
| A. | 1 |
| B. | 0 < e < 1 |
| C. | e > 1 |
| D. | e = 0 |
| Answer» C. e > 1 | |
| 82. |
Surface resistance is the reciprocal of |
| A. | surface coefficient |
| B. | surface resistivity |
| C. | surface conductance |
| D. | surface conductivity |
| Answer» B. surface resistivity | |
| 83. |
For a particle inside a box, the potential is maximum at x = |
| A. | l |
| B. | 2l |
| C. | l/2 |
| D. | 3l |
| Answer» B. 2l | |
| 84. |
The Eigen value of a particle in a box is |
| A. | l/2 |
| B. | 2/l |
| C. | l/2 |
| D. | 2/l |
| Answer» E. | |
| 85. |
In screw dislocation, the Burger s vector lies to the dislocation line. |
| A. | perpendicular |
| B. | parallel |
| C. | at an angle |
| D. | sideways |
| Answer» C. at an angle | |
| 86. |
Resistance thermometer generally makes use of for the measurement of resistance. |
| A. | potentiometer |
| B. | adruino |
| C. | diode bridge |
| D. | wheatstone bridge |
| Answer» E. | |
| 87. |
2 THERMAL EXPANSION OF SOLIDS AND LIQUIDS |
| A. | high heat capacity |
| B. | no heat capacity |
| C. | small heat capacity |
| D. | varying heat capacity |
| Answer» D. varying heat capacity | |
| 88. |
The are provided in expansion and contraction joints to transfer the load. |
| A. | dowels |
| B. | fillers |
| C. | joint filler |
| D. | waterbars |
| Answer» B. fillers | |
| 89. |
Measurement of elevated temperatures is defined as |
| A. | thermometry |
| B. | pyrometry |
| C. | metallography |
| D. | radiography |
| Answer» C. metallography | |
| 90. |
Reflective sheet materials used as thermal insulating material have reflectivity and emissivity. |
| A. | high, high |
| B. | high, low |
| C. | low, low |
| D. | low, high |
| Answer» C. low, low | |
| 91. |
The reciprocal of thermal conductivity is known as |
| A. | thermal conductance |
| B. | surface resistance |
| C. | specific conductance |
| D. | thermal resistivity |
| Answer» E. | |
| 92. |
The radiations emitted by hot bodies are called as |
| A. | x-rays |
| B. | black-body radiation |
| C. | gamma radiations |
| D. | visible light |
| Answer» C. gamma radiations | |
| 93. |
16 W/m K, with a temperature difference between the two sides of 20 C. |
| A. | 113 w/m2 |
| B. | 213 w/m2 |
| C. | 230 w/m2 |
| D. | 312 w/m2 |
| Answer» C. 230 w/m2 | |
| 94. |
According to the Indian Standards, it is recommended that thermal damping of a wall should not be less than |
| A. | 40% |
| B. | 50% |
| C. | 60% |
| D. | 80% |
| Answer» D. 80% | |
| 95. |
Liquid expansion thermometers are filled with |
| A. | mercury |
| B. | amalgam |
| C. | gallium |
| D. | cesium |
| Answer» B. amalgam | |
| 96. |
is commonly used in liquid- expansion thermometers. |
| A. | bourdon tube |
| B. | spinning rotor gauge |
| C. | mcleod gauge |
| D. | manometer |
| Answer» B. spinning rotor gauge | |
| 97. |
Direct solar water heating systems |
| A. | offer great overheating protection |
| B. | are called pumped systems |
| C. | offer no overheating protection |
| D. | offer great freeze protection |
| Answer» D. offer great freeze protection | |
| 98. |
The line at which the tunnel wall breaks from sloping outward can be given as |
| A. | spring line |
| B. | oval line |
| C. | centre line |
| D. | middle line |
| Answer» B. oval line | |
| 99. |
At iron changes its BCC structure to FCC. |
| A. | 308oc |
| B. | 568oc |
| C. | 771oc |
| D. | 906oc |
| Answer» E. | |
| 100. |
The number of dislocations increases drastically during |
| A. | solidification |
| B. | plastic deformation |
| C. | elastic deformation |
| D. | heat treatment |
| Answer» C. elastic deformation | |