MCQOPTIONS
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MCQOPTIONS
This section includes 410 Mcqs, each offering curated multiple-choice questions to sharpen your Arithmetic Ability knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
Given a unit step function u(t), its time-derivative is: |
| A. | another step function. |
| B. | a unit impulse. |
| C. | a sine function. |
| D. | a unit ramp function. |
| Answer» C. a sine function. | |
| 102. |
The Critical Clearance time of a fault in the power system is related to |
| A. | Short Circuit limit |
| B. | Reactive power limit |
| C. | Transient stability limit |
| D. | Steady state stability limit |
| Answer» D. Steady state stability limit | |
| 103. |
One way to derive FM from PM is: |
| A. | integrate the signal out of the PM oscillator |
| B. | integrate the modulating signal before applying to the PM oscillator |
| C. | differentiate the signal out of the PM oscillator |
| D. | differentiate the modulating signal before applying to the PM oscillator |
| Answer» C. differentiate the signal out of the PM oscillator | |
| 104. |
Which of the following is a universal gate ? |
| A. | EX-OR |
| B. | AND |
| C. | NAND |
| D. | OR |
| Answer» D. OR | |
| 105. |
A band pass signal extends from 1 KHz to 2 KHz. The minimum sampling frequencyneeded to retain all information in the sampled signal is |
| A. | 2 KHz. |
| B. | 1 KHz. |
| C. | 4 KHz. |
| D. | 3 KHz. |
| Answer» B. 1 KHz. | |
| 106. |
FM stereo: |
| A. | is implemented using an SCA signal |
| B. | uses DSBSC AM modulation |
| C. | is not compatible with mono FM |
| D. | has a higher S/N than mono FM |
| Answer» C. is not compatible with mono FM | |
| 107. |
Harry decides to determine the cohesion of a module by writing a brief statement of its purpose.He finds it has compound statements containing commas or more than one verb. The module probably has |
| A. | temporal or functional binding |
| B. | sequential or communicational binding. |
| C. | cofincidental or functional binding |
| D. | communicational or information binding |
| Answer» C. cofincidental or functional binding | |
| 108. |
A continuous-time periodic signal x(t) , having a period T, is convolved withitself. The resulting signal is |
| A. | periodic having a period T |
| B. | not periodic |
| C. | periodic having a period T/2 |
| D. | periodic having a period 2T |
| Answer» D. periodic having a period 2T | |
| 109. |
The total and effective stresses at a depth of 5 m below the top level of water in a swimming pool are respectively |
| A. | 0.5 kg/cm2 and zero |
| B. | zero and zero |
| C. | 1.0 kg/cm2 and 0.5 kg/cm2 |
| D. | 0.5 kg/cm2 and 0.5 kg/cm2 |
| Answer» B. zero and zero | |
| 110. |
In a conductor the valence band and the conduction band |
| A. | Separated by small gap |
| B. | Separated by large gap |
| C. | None of the above |
| D. | Overlapping |
| Answer» E. | |
| 111. |
A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be |
| A. | M/2 |
| B. | M |
| C. | M/4 |
| D. | 2 M |
| Answer» B. M | |
| 112. |
The ON-OFF controller is a __ system |
| A. | Non linear |
| B. | Linear |
| C. | Digital |
| D. | Discontinuous |
| Answer» B. Linear | |
| 113. |
JFET is a |
| A. | Voltage controlled device with high input resistance |
| B. | Current controlled device with high input resistance |
| C. | Voltage Controlled Voltage Source (VCVS) |
| D. | Current Controlled Current Source (CCCS) |
| Answer» B. Current controlled device with high input resistance | |
| 114. |
If 10 0hm and 5 ohm connected in parallel, then equiavalant resistance is-- |
| A. | 3.33 ohm |
| B. | 15 ohm |
| C. | 2.5 ohm |
| D. | 5.66 ohm |
| Answer» B. 15 ohm | |
| 115. |
A logic circuit which is used to change a BCD number into an equivalent decimal number is- |
| A. | Encoder |
| B. | Decoder |
| C. | Code converter |
| D. | Multiplexer |
| Answer» C. Code converter | |
| 116. |
Zener diode is used as the main component in dc power supply for: |
| A. | Voltage regulation |
| B. | Rectification |
| C. | Both ( and ( |
| D. | Filter action |
| Answer» B. Rectification | |
| 117. |
A series circuit has a 24 V source and a total resistance of 120 ohm. The current through each resistor is |
| A. | 200 mA |
| B. | 24 mA |
| C. | 20 mA |
| D. | 120 mA |
| Answer» B. 24 mA | |
| 118. |
Solve this binary problem: 01000110 ÷ 00001010 = |
| A. | 10011 |
| B. | 111 |
| C. | 11 |
| D. | 1001 |
| Answer» C. 11 | |
| 119. |
A transistor in common emitter mode has |
| A. | a medium input resistance and high output resistance |
| B. | a high input resistance and low output resistance |
| C. | a high input resistance and a high output resistance |
| D. | a very low input resistance and a low output resistance |
| Answer» B. a high input resistance and low output resistance | |
| 120. |
Customers will not have trouble using a proposed system. Select the best it for answer : |
| A. | Spiral |
| B. | Waterfall |
| C. | None of these |
| D. | Prototype |
| Answer» E. | |
| 121. |
Four identical resistors are first connected in parallel and then in series. The resultant resistance of the first combination to the second will be |
| A. | 1 / 16 times |
| B. | Four identical resistors are first connected in parallel and then in series. The resultant resistance of the first combination to the second will be |
| C. | 16 times. |
| D. | 1 / 4 times |
| Answer» E. | |
| 122. |
You would with certainty recognize a hydrogen controlled flux covered electrode from its: |
| A. | AWS / BS639 Code Letter |
| B. | Colour |
| C. | Trade Name |
| D. | Length |
| Answer» B. Colour | |
| 123. |
My brother is 3 years elder to me. My father was 28 years of age when my sister was born while my mother was 26 years of age when I was bom. If my sister was 4 years of age when my brother was born, then, what was the age of my father and mother resp |
| A. | 32 yrs, 29 yrs |
| B. | 32 yrs, 23 yrs |
| C. | 35 yrs, 33 yrs |
| D. | 35 yrs, 29 yrs |
| Answer» C. 35 yrs, 33 yrs | |
| 124. |
The PDA used for TVRO is used for |
| A. | Transmitting signals |
| B. | Receiving signals |
| C. | None of the above. |
| D. | Both as ( & ( simultaneously |
| Answer» C. None of the above. | |
| 125. |
A person was asked to state his age in years. His reply was, “Take my age three years hence, multiply it by 3 and then subtract three times my age three years ago and you will know how old I am.” What was the age of the person ? |
| A. | 18 years |
| B. | 14 years |
| C. | 32 years |
| D. | 20 years |
| Answer» B. 14 years | |
| 126. |
Colour Temperature of average day light is |
| A. | 5600 K |
| B. | 3200 K |
| C. | None of the above. |
| D. | 6500 K |
| Answer» E. | |
| 127. |
Control Systems are normally designed with damping factor: |
| A. | More than unity |
| B. | Less than unity |
| C. | Unity |
| D. | Zero |
| Answer» C. Unity | |
| 128. |
In an n-type semiconductor, as temperature T increases, the Fermi level EF |
| A. | moves towards middle of forbidden energy gap |
| B. | moves towards conduction band |
| C. | may or may not shift depending upon the concentration of donor atoms |
| D. | does not vary |
| Answer» C. may or may not shift depending upon the concentration of donor atoms | |
| 129. |
It is desired to concentrate a 20% salt solution ( kg of salt in 100 kg of solution) to a 30% salt solution in an evaporator. Consider a feed of 300 kg/min at 30°C. The boiling point of the solution is 110°C, the latent heat of vaporisation |
| A. | 6.12 x 105 |
| B. | 3.06 x l05 |
| C. | 9.08 x 105 |
| D. | 7.24 x 105 |
| Answer» C. 9.08 x 105 | |
| 130. |
The diode in which impurities are heavily doped is |
| A. | PIN diode |
| B. | Varactor diode |
| C. | Zener diode |
| D. | Tunnel diode |
| Answer» E. | |
| 131. |
When FM reception deteriorates abruptly due to noise, it is called: |
| A. | the threshold effect |
| B. | the capture effect |
| C. | the limit effect |
| D. | the noise effect |
| Answer» B. the capture effect | |
| 132. |
A 120 ohm resistor is in parallel with a capacitor with a capacitive reactance of 40 ohm . Both components are across a 12 V ac source. What is the magnitude of the total impedance? |
| A. | 3.7 ohm |
| B. | 37.9 ohm |
| C. | 4,800 ohm |
| D. | 14,400 ohm |
| Answer» C. 4,800 ohm | |
| 133. |
The value of compression index for a remoulded sample whose liquid limit is 50% is |
| A. | 0.28 |
| B. | 0.028 |
| C. | 0.036 |
| D. | 36 |
| Answer» B. 0.028 | |
| 134. |
A permanent magnet |
| A. | attracts all paramagnetic substan¬ces and repels others |
| B. | attracts some substances and repels others |
| C. | attracts ferromagnetic substances and repels all others |
| D. | attracts only ferromagnetic sub¬stances |
| Answer» C. attracts ferromagnetic substances and repels all others | |
| 135. |
The absorptivity of a grey body at a given temperature __________ with increasing wavelength of radiation. |
| A. | decreases |
| B. | increases |
| C. | may increase or decrease ; depends on the material |
| D. | remains constant |
| Answer» D. remains constant | |
| 136. |
In an oblique drawing, the projection rays are drawn _________ to each other and _______ to the plane of projection. |
| A. | oblique.....parallel |
| B. | oblique.....oblique |
| C. | parallel....parallel |
| D. | parallel.....oblique |
| Answer» E. | |
| 137. |
Euler\'s equation of motion states, that at every point, the |
| A. | force per unit mass equals acceleration. |
| B. | fluid momentum is constant. |
| C. | none of these. |
| D. | rate of mass outflow is equal to the rate of mass inflow. |
| Answer» B. fluid momentum is constant. | |
| 138. |
In a system low friction co-efficient facilitates |
| A. | increased velocity lag error |
| B. | reduced velocity lag error |
| C. | reduced time constant of the system |
| D. | increased speed of response |
| Answer» C. reduced time constant of the system | |
| 139. |
The order of a linear constant-coefficient differential equation representing a systemrefers to the number of |
| A. | elements including sources. |
| B. | active devices. |
| C. | none of those. |
| D. | passive devices. |
| Answer» D. passive devices. | |
| 140. |
You are to oversee the arc welding of some machined fittings and find they are cadmium plated. Would you |
| A. | Permit it to proceed with fume extraction |
| B. | Permit it to proceed |
| C. | Advise the welder to drink milk and proceed |
| D. | Stop the operation at once |
| Answer» E. | |
| 141. |
Clay layer A with single drainage and coefficient of consolidation Cv takes 6 months to achieve 50% consolidation. The time taken by clay layer B of the same thickness with double drainage and coefficient of consolidation Cv/2 to achieve the same deg |
| A. | 6 months |
| B. | 3 months |
| C. | 24 months |
| D. | 12 months |
| Answer» C. 24 months | |
| 142. |
The property of Fourier Transform which states that the compression in timedomain is equivalent to expansion in the frequency domain is |
| A. | Scaling. |
| B. | Duality. |
| C. | Frequency Shifting. |
| D. | Time Scaling. |
| Answer» E. | |
| 143. |
The present ages of three persons are in proportions 4 :7 :9. Eight years ago, the sum of their ages was 56. Find their present ages (in years) |
| A. | 16, 28, 36 |
| B. | 8, 20, 28 |
| C. | None of these |
| D. | 20, 35, 45 |
| Answer» B. 8, 20, 28 | |
| 144. |
Consider the modules A and B of the previous question |
| A. | C (a < Ca Cb |
| B. | C (a > Ca Cb |
| C. | None of the above |
| D. | C ( a = Ca Cb |
| Answer» C. None of the above | |
| 145. |
The electromagnet has 50 turns and a current of 1A flows through the coil. If the length of the magnet circuit is 200 mm, what is the magnetic field strength ? |
| A. | 250 AT/m |
| B. | 2500 AT/m |
| C. | 2.5 AT/m |
| D. | 25 AT/m |
| Answer» B. 2500 AT/m | |
| 146. |
Which configuration has unity voltage gain (ideal) |
| A. | a Common Emitter (CE) |
| B. | a Common Collector (CC) |
| C. | CE followed by CB |
| D. | a Common Base (CB) |
| Answer» C. CE followed by CB | |
| 147. |
I.F. at output of TV Receiver tuner for video is |
| A. | 33.4 MHz |
| B. | 38.9 MHz |
| C. | None of the above. |
| D. | 40.5 MHz |
| Answer» C. None of the above. | |
| 148. |
Which of the following diodes is operated in reverse bias mode ? |
| A. | Zener |
| B. | P-N junction |
| C. | Schottky |
| D. | Tunnel |
| Answer» B. P-N junction | |
| 149. |
Hitesh is 40 years old and Ronnie is 60 years old. How many years ago was the ratio of their ages 3 : 5? |
| A. | 10 years |
| B. | 5 years |
| C. | 37 years |
| D. | 20 years |
| Answer» B. 5 years | |
| 150. |
Vena-contracta pressure tapping is at a distance __________ from the position of an orificemeter fitted in a pipe of internal diameter \'d\' |
| A. | 0.5d |
| B. | d |
| C. | 4d |
| D. | 2d |
| Answer» B. d | |