Mechanical Engineering CBT Mock Test - Set 18

Mechanical Mock Test - Set 18

---

Today, all competitive exams are Multiple Choice Questions(MCQ) based examination system and the main factor is to answer each question in a prescribed time. So, practice as much as possible before the original test you are going to face.

Total number of Multiple Choice Question (MCQ) is 15 and time allotted for each question is 30 seconds. After the allotted time, the question will be marked as un-attempt.

Test Conducted by: ObjectiveBooks.com

---

 Next Mock Tests:

Set 01

Set 02

Set 03

Set 04

Set 05

Set 06

Set 07

Set 08

Set 09

Set 10

Set 11

Set 12

Set 13

Set 14

Set 15

Set 16

Set 17

Set 18

Set 19

Set 20

Set 21

Set 22

Set 23

Set 24

---

View Test Result:

01. Superheating in a refrigeration cycle
     (A) Increases C.O.P
     (B) Decreases C.O.P
     (C) C.O.P remains unaltered
     (D) Other factors decide C.O.P
     Answer: Option B

02. The most commonly used method for the design of duct size is the
     (A) Velocity reduction method
     (B) Equal friction method
     (C) Static regains method
     (D) Dual or double method
     Answer: Option C

03. The speed of an imaginary turbine, identical with the given turbine, which will develop a unit power under a unit head, is known as
     (A) Normal speed
     (B) Unit speed
     (C) Specific speed
     (D) None of these
     Answer: Option C

04. A slider crank chain consists of following numbers of turning and sliding pairs
     (A) 1, 3
     (B) 2, 2
     (C) 3, 1
     (D) 4, 0
     Answer: Option C

05. The Auto-CAD command used to combine two or more primitive shapes into a single complex 3-dimensional model is ________.
     (A) Add
     (B) Union
     (C) Attach
     (D) Form
     Answer: Option B

06. The largest diameter of an external or internal screw thread is known as
     (A) Minor diameter
     (B) Major diameter
     (C) Pitch diameter
     (D) None of these
     Answer: Option B

07. In order to have smooth operation, the minimum number of teeth on the smaller sprocket, for moderate speeds, should be
     (A) 15
     (B) 17
     (C) 21
     (D) 25
     Answer: Option B

08. Resilience of a material is important, when it is subjected to
     (A) Combined loading
     (B) Fatigue
     (C) Thermal stresses
     (D) Shock loading
     Answer: Option D

09. Spring stiffness is
     (A) Ratio of coil diameter to wire diameter
     (B) Load required to produce unit deflection
     (C) Its capability of storing energy
     (D) Its ability to absorb shocks
     Answer: Option B

10. Short horizontal lines on pressure-enthalpy chart show
     (A) Constant pressure lines
     (B) Constant temperature lines
     (C) Constant total heat lines
     (D) Constant entropy lines
     Answer: Option A

11. In fusion welding process
     (A) Only heat is used
     (B) Only pressure is used
     (C) Combination of heat and pressure is used
     (D) All three methods are used
     Answer: Option A

12. The process of changing the shape of grinding wheel as it becomes worn due to breaking away of the abrasive and bond, is called
     (A) Truing
     (B) Dressing
     (C) Facing
     (D) Clearing
     Answer: Option A

13. The angle between two forces when the resultant is maximum and minimum respectively are
     (A) 0° and 180°
     (B) 180° and 0°
     (C) 90° and 180°
     (D) 90° and 0°
     Answer: Option A

14. The thermal or temperature stress is a function of
     (A) Increase in temperature
     (B) Modulus of elasticity
     (C) Coefficient of linear expansion
     (D) All of these
     Answer: Option D

15. The secondary unbalanced force is maximum when the angle of inclination of the crank with the line of stroke is
     (A) 0° and 90°
     (B) 180° and 360°
     (C) Both (A) and (B)
     (D) None of these
     Answer: Option C

---